VERSION

Project: jackson-databind 
Versions: 3.x (for earlier see VERSION-2.x)

------------------------------------------------------------------------
=== Releases ===
------------------------------------------------------------------------

3.3.0 (not yet released)

#1127: `@JsonTypeInfo` with `EXTERNAL_PROPERTY` does not handle arrays of
  polymorphic types: now fails eagerly with clear `InvalidDefinitionException`
  (on both serialization and deserialization) instead of confusing low-level error
 (reported by Alex C)
 (fix by @cowtowncoder, w/ Claude code)
#1803: `TreeTraversingParser` should allow passing of parent context
 (fix by @cowtowncoder, w/ Claude code)
#3182: Add `StringCanonicalizingConverter` for opt-in canonicalization
  ("de-duplication") of low-cardinality `String` values
 (requested by Fabian L)
 (contributed by DongNyoung L)
#3947: Multiple suitable annotated Creator factory methods to be used as the
  Key deserializer when using record als key in Map
 (reported by @toonborgers)
 (fix by @DragonFSKY)
#4385: Allow changing serializer used for a single property of a Class
  (allow `ValueSerializerModifier` to replace property serializer via
  `BeanPropertyWriter.assignSerializer()`)
 (requested by @Guy2You)
 (fix by @exijn)
#4762: `@JsonValue` serialization ignores annotations on the annotated accessor
  (particularly `@JsonInclude`, `@JsonFormat`)
 (reported by @sikorskii)
 (fix by @seonwooj0810)
#6069: Change throws declaration on convertValue to JacksonException to match what
  is actually thrown
 (reported by @pctF)
 (fix by @pjfanning)
#6091: Report the active token when polymorphic deserialization replays buffered content
 (reported by @Laar)
 (fix by @jakezwang, w/ OpenAI Codex)
#6113: Fix `DOMSerializer` to support polymorphic serialization
 (fix by @dong0713)
#6114: Fix QName object deserialization to reject non-String namespaceURI/prefix
 (fix by @dong0713)
#6120: Use per-node-type Type Ids for DOM values, reconstruct via DOM factory
  instead of always parsing a `Document`
 (fix by @cowtowncoder, w/ Claude code)
#6128: Fail explicitly on POJO that has both `@JsonFormat(shape=ARRAY)` and `@JsonFilter`
 (fix by @DragonFSKY)
#6136: `@JsonFilter` with `serializeAllExcept()` does not filter `@JsonAnyGetter`
  entries
 (fix by Aysha A-Z)
#6142: Invalidate read-only lookup snapshot in `SerializerCache` when a typed
  serializer entry is replaced (and not just when added)
 (fix by @Dongnyoung)
#6151: Add `DateTimeFeature.ALWAYS_WRITE_SUBSECOND_DIGITS`
 (contributed by @seonwooj0810)
#6168: Cache raw parameter types in `AnnotatedConstructor`
 (fix by @Dongnyoung)
#6170: Allow skipping null values for properties handled by `@JsonAnySetter`
 (fix by @Dongnyoung)
#6175: Parse object-form `QName` after `As.PROPERTY` type id
 (reported by @jjh75607)
 (fix by @kalayciburak)
#6178: `JsonFormat.Feature.ACCEPT_CASE_INSENSITIVE_VALUES` does not work for
  `java.time.Month`
 (reported by @laech)
 (fix by @Dongnyoung)
#6187: Make `InvokerHolder` access in `AnnotatedConstructor` lazy
 (requested by @cowtowncoder)
 (fix by @kalayciburak)
#6198: Make `InvokerHolder` access in `AnnotatedMethod` lazy
 (requested by @cowtowncoder)
 (fix by @kalayciburak)
#6188: `ThrowableDeserializer` does not resolve standard `Throwable` property
  names against `PropertyNamingStrategy`
 (fix by @cowtowncoder, w/ Claude code)
#6190: Explicit `@JsonView` on a standard `Throwable` property is ignored by
  `ThrowableDeserializer`
 (fix by @adityabagla7)
#6193: Use `JsonParser.nextNameMatchAndToken()` in the vanilla `BeanDeserializer` loops
 (contributed by Steven S)
#6195: Close managed `JsonParser` if `ObjectReader.readValues()` initialization fails
 (fix by @pjfanning)
#6196: Close `JsonGenerator` if initialization fails before any content is written
 (fix by @pjfanning)
#6197: `ClassCastException` for `AutoCloseable` (but not `Closeable`) values in
  `ObjectMapper.writeValue(JsonGenerator, Object)` with `SerializationFeature.CLOSE_CLOSEABLE`
 (fix by @pjfanning)
#6216: Add `TreeTraversingParser` constructors that take explicit
  `StreamReadConstraints` (for tree-backed format backends)
#6220: `@JsonDeserialize(as/keyAs/contentAs)` lost when property's type deserializer
  (Default Typing, `@JsonTypeInfo`) resolves a type id: type deserializer was built
  for the declared type, before the refinement
 (fix by @pjfanning)
#6229: `DETECT_PARAMETER_NAMES` disabled also prevents `@ConstructorProperties`
  based Creator detection
 (fix by @mauriciocsz)
#6231: Add copy constructor for `JacksonAnnotationIntrospector` (for sub-classes
  to create re-configured copies)
 (fix by @cowtowncoder, w/ Claude code)
#6233: Serialize `Month` as Enum name with `@JsonFormat(shape = STRING)`
 (fix by @pjfanning)
#6239: Explicit `JsonFormat.Shape.NUMBER_INT`/`NUMBER_FLOAT` not honored for
  nanosecond handling of `java.time` values (serialization, deserialization)
 (fix by @cowtowncoder, w/ Claude code)
#6243: Filter ignored Creator properties at build time instead of per-loop
  read-time checks
 (fix by @dlwhdgus0810)
#6255: `@JsonIgnoreProperties`/`@JsonIncludeProperties` not honored for
  `ObjectNode`/`JsonNode`-valued `@JsonAnyGetter` entries
 (fix by Aysha A-Z)
#6257: `MapDeserializer`: `@JsonIgnoreProperties`/`@JsonIncludeProperties` checked
  after key deserialization, so ignored non-convertible key names still failed
 (fix by @cowtowncoder, w/ Claude code)

3.2.4 (not yet released)

#6145: `@JsonIgnoreProperties` bypassed for Creator properties with builders
  and external type ids
 (fix by Aysha A-Z)
#6206: Report cycle through `@JsonValue` accessor as `DatabindException`
  (instead of `StackOverflowError`)
 (fix by @pjfanning, w/ Claude code)
#6225: `ArrayStoreException` when a Builder-based typed array resolves a forward
  Object Id reference within the same array
 (fix by @jakezwang)
#6227: `BeanDescription` is not thread-safe when called concurrently on the
  same instance (`findProperties()`, `findDefaultViews()`)
 (reported by @sergeylappo)
 (fix by @pjfanning, w/ Claude code)
#6232: Validate `StreamReadConstraints` number length when coercing `StringNode`
  to number
 (fix by Aysha A-Z)
#6236: Retain `JsonFormat.Shape` in `withFormat()` of `Month`, `MonthDay`, `Year`
  and `YearMonth` serializers
 (fix by @cowtowncoder, w/ Claude code)
#6240: `@JsonValue` ignored on getter also annotated with `@JsonKey`
 (fix by @kimsanhaa)
#6246: Creator properties not renamed for `@JsonUnwrapped` with prefix/suffix
  with `MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES`
 (fix by @cowtowncoder, w/ Claude code)
#6249: Avoid NPE when parser reports `VALUE_STRING` with `null` text
 (fix by @pjfanning, w/ Claude code)
#6252: `@JsonIgnoreProperties` not honored for `EnumMap` properties
 (fix by Aysha A-Z)
#6261: Support `@JsonView` on properties-based Creator parameters of Enum, Map
  and EnumMap types
 (fix by @pjfanning, w/ Claude code)
#6273: Deserializing empty `Locale` Map keys (and other non-BCP-47 single-segment
  values) fails since 3.2.0
 (reported by @schabe77)
 (fix by @pjfanning, w/ Claude code)

3.2.3 (21-Sep-2026)

#6157: `@JsonIncludeProperties` not honored for `Throwable` types with
  `@JsonAnySetter`
 (fix by Aysha A-Z)
#6174: Honor `@JsonView` in `ThrowableDeserializer.deserializeFromObject()`
 (fix by Aysha A-Z)
#6179: Apply `StreamReadConstraints` number length limit when coercing String
  to `double`
 (fix by Aysha A-Z)
#6182: `StdDateFormat.<clinit>` degrades JIT compilation of
  `UTF8JsonGenerator._writeStringSegment`
 (fix by Francesco N)
#6185: Bracket unresolved IPv6 host name in `InetSocketAddress` serialization
 (fix by @pjfanning, w/ Claude code)
#6203: Prevent unbounded growth of type id cache in `TypeDeserializer`
  [CVE-2026-91776]
 (reported by @dabirt)
 (fix by @pjfanning)
#6204: Avoid quadratic forward-reference resolution in Collection/Map
  deserializers [CVE-2026-91777]
 (reported by @dabirt)
 (fix by @pjfanning)
#6205: Avoid quadratic forward-reference resolution in `ObjectArrayDeserializer`
 (fix by @pjfanning, w/ Claude code)
#6214: `DecimalNode` to `BigInteger` conversion no longer guarded by
  `StreamReadConstraints.validateBigIntegerScale()` (regression from 2.x)
 (fix by @pjfanning, w/ Claude code)
#6223: Avoid quadratic Object Id rebinding for Builder- and delegate-based values
 (fix by @cowtowncoder, w/ Claude code)

3.2.2 (14-Aug-2026)

#6096: Honor `@JsonView` in `BeanAsArrayDeserializer` update path
 (fixed by Aysha A-Z)
#6099: Resolve classes without initialization in `TypeFactory.findClass()`
 (fixed by Aysha A-Z)
#6101: `@JsonInclude(NON_EMPTY, content=CUSTOM)` does not omit a Map property
  after all entries are filtered
 (reported by @dlwldnjs1009)
 (fix by @seonwooj0810)
#6109: Mark built-in JDK 8 handlers (`Optional`, `Stream`) with `@JacksonStdImpl` so
  optimization modules (Blackbird) can retain optimized handlers
 (fix by Lee Jiwon)
#6115: Honor `@JsonIgnoreProperties` before any-setter on more deser paths
 (fix by Aysha A-Z)
#6116: Reject non-ASCII digits in `InetAddress` literal validation
 (fixed by Aysha A-Z)
#6127: Add `StreamReadConstraints` number len constraint to `javax.xml.datatype.XMLGregorianCalendar`
  and `javax.xml.datatype.Duration` [CVE-2026-68497]
 (reported by @waydeshi)
 (fix by @pjfanning)
#6129: Limit the supported URL schemes for `java.nio.file.Path`
  deserialization [CVE-2026-19032]
 (reported by @waydeshi)
 (fix by @pjfanning)
#6137: `DefaultCacheProvider.Builder` does not preserve default cache sizes
  for unspecified values
 (reported, fixed by DongNyoung L)
#6156: Add `java.lang.Comparable` in set of "unsafe" polymorphic base types
  [CVE-2026-83557]
 (reported by @prvazsahnazarov)

3.2.1 (10-Jul-2026)

#6022: Follow-up to #5369: apply content @JsonInclude in
  `StringCollectionSerializer.serializeWithType`
 (contributed by Lee Jiwon)
#6028: Verification of unwrapped fields should mention type containing unwrapped POJO
 (reported by Oliver D)
 (fix by @cowtowncoder, w/ Claude code)
#6031: Getter annotated with `@JsonIgnore` prevents `@JsonAlias` from working
  on `@JsonCreator` parameter (regression in 3.2.0)
 (reported by @ynojima)
 (fix by @cowtowncoder, w/ Claude code)
#6043: `FAIL_ON_UNKNOWN_PROPERTIES` has no effect with `JsonFormat.Shape.ARRAY` when
  using creator-based instantiation (such as `record`)
 (reported by Théo S)
 (fix by @seonwooj0810)
#6055: Honor `@JsonView` for external-type-id (`EXTERNAL_PROPERTY`)
  properties [GHSA-mhm7-754m-9p8w]
 (reported by @Sharlong-Wen)
#6058: Do not allow DNS resolution when deserializing `InetAddress` [CVE-2026-77310]
 (reported by @thientd)
 (fix by @pjfanning)
#6059: `ObjectMapper.valueToTree()` with `byte[]` does not produce `BinaryNode`
 (reported by @sebastien-leveque)
 (fix by @cowtowncoder, w/ Claude code)
#6060: `@JsonView` by-passed for `@JsonUnwrapped` Field/Setter properties [CVE-2026-59889]
#6065: `SerializationFeature.APPLY_JSON_INCLUDE_FOR_CONTAINERS` does not fully
  remove empty collection during serialization
 (reported by @doeiqts)
 (fix by @seonwooj0810)
#6077: `FAIL_ON_UNEXPECTED_VIEW_PROPERTIES` not being respected with constructor-backed properties
  (nor with Builders, `@JsonUnwrapped`, external type ids or `Shape.ARRAY`)
 (reported by João G)
 (fix by João G and @cowtowncoder, w/ Claude code)

3.2.0 (08-Jun-2026)

#639: `@JacksonInject` with `@JsonIdentityInfo` causes deserialization
  failure (unresolved forward reference)
 (reported by Gili T)
 (fix by @cowtowncoder, w/ Claude code)
#644: Allow skipping writing of type id if type to serialize is `defaultImpl`
 (implemented by @cowtowncoder, w/ Claude code)
#1075: `@JsonUnwrapped` fields with matching `@JsonIgnore`d getter
  in outer class are ignored
 (reported by Sylvain G)
 (fix by @cowtowncoder, w/ Claude code)
#1281: `@JsonIgnoreProperties` should work for "any getter" (for serialization)
 (reported by Benson M)
#1298: Writing ObjectId reference for `@JsonUnwrapped` property fails
  with obscure error message
 (reported by Jeff Q)
 (fix by @cowtowncoder, w/ Claude code)
#1329: External type property (`@JsonTypeInfo(include = As.EXTERNAL_PROPERTY`))
  deserialized even if `visible = false`
 (fix by @cowtowncoder, w/ Claude code)
 (reported by Raman G)
#1410: Overlap between `@JsonTypeInfo.As.PROPERTY` indicated type id and field
  with same name results in `UnrecognizedPropertyException`
 (reported by Kevin H)
 (fix by @cowtowncoder, w/ Claude code)
#1496: Support use of Object IDs with Builders
 (reported by @gary-sedgwick)
 (fix by @cowtowncoder, w/ Claude code)
#1515: `@JsonSerialize(Typing.DYNAMIC)` in some cases does not override
  `MapperFeature.USE_STATIC_TYPING`
 (reported by @garkin)
 (fix by @cowtowncoder, w/ Claude code)
#1528: `@JsonTypeInfo` visible property set to `null` in defaultImpl class
 (reported by Davide M)
#1546: Resolving forward references with `@JsonManagedReference`/
  `@JsonBackReference` into `Set` may corrupt `hashCode`-based lookups
 (reported by Niels D)
 (fix by @cowtowncoder, w/ Claude code)
#1622: Failure to deserialize child object when using `@JsonIgnoreProperties`
  to break cycle
 (reported by @b-behan)
 (fix by @JacksonJang)
#1706: `@JsonCreator` not working properly with `@JsonIdentityInfo` when
  deserializing a collection of interfaces (immutables.io compatibility)
 (reported by Balys V)
 (fix by @cowtowncoder, w/ Claude code)
#1755: Get NPE on deserializing values with recursive `@JsonIgnoreProperties`
 (reported by @Romain-P)
 (fix by @cowtowncoder, w/ Claude code)
#1757: Regression in `JsonInclude.Include.NON_DEFAULT` set as global default
  serialization inclusion (add new `MapperFeature.USE_REAL_INCLUDE_NON_DEFAULT`)
 (reported by @yhack)
 (fix by @cowtowncoder, w/ Claude code)
#1921: Reader for updating do not use `@JsonCreator` constructor
 (reported by Patrik M)
 (fix by @cowtowncoder, w/ Claude code)
#2039: `@JsonUnwrapped` and `JsonTypeInfo.As.EXTERNAL_PROPERTY` in the
  same bean doesn't work
 (reported by @tlevavasseur-innovantic)
 (fix by @cowtowncoder, w/ Claude code)
#2100: Using `ObjectReader.withValueToUpdate()` with JsonPOJOBuilder
  no longer working
 (reported by Leonid T)
 (fix by @cowtowncoder, w/ Claude code)
#2572: Can't deserialize inner class if default setter is `Nulls.AS_EMPTY`
 (reported by @XakepSDK)
 (fix by @cowtowncoder, w/ Claude code)
#2736: Unable to deserialize `@JsonUnwrapped` `Optional<>` field
 (reported by Vitaly B)
 (fix by @cowtowncoder, w/ Claude code)
#2747: `@JsonTypeInfo(include = EXTERNAL_PROPERTY)` exposes bogus array
  via `JsonStreamContext` during deserialization
 (reported by David A)
 (fix by @cowtowncoder, w/ Claude code)
#2780: Deserialization with Default Typing and `@JsonIdentityInfo`
  in untyped collections fails
 (reported by @ alex-t0)
 (fix by @cowtowncoder, w/ Claude code)
#2883: Annotation `@JsonUnwrapped` can serialize duplicate properties
 (reported by Michał R)
 (fix by @cowtowncoder, w/ Claude code)
#2955: Handling UnresolvedForwardReference by pre-processing illegal values
 (reported by Andrey U)
 (fix by @cowtowncoder, w/ Claude code)
#3030: Correctly deserialize forward `@JsonIdentityInfo` references
  when using `@JsonCreator`
 (reported by Benedikt P)
 (fix by @cowtowncoder, w/ Claude code)
#3064: `@JsonPropertyOrder(alphabetic=true)` is ignored in case indices are
  defined for `@JsonProperty` -- add `MapperFeature.SORT_PROPERTIES_BY_INDEX`
 (reported by Christian D)
 (contributed by Lee Jiwon)
#3083: `@JsonIncludeProperties` could be used like `@JsonPropertyOrder`
 (suggested by Marcel O)
 (fix by @cowtowncoder, w/ Claude code)
#3166: Ability to sort `Set`s before serialization (add
  `SerializationFeature.ORDER_SET_ELEMENTS`)
 (requested by @mjustin)
 (implemented by @Lee Jiwon)
#3169: `@JsonIncludeProperties` does not work together with `@JsonIdentityInfo`
 (reported by Christof T)
#3178: `@JsonUnwrapped` deserialization results in empty nested object when using prefix
 (reported by @chimmi)
 (fix by @cowtowncoder, w/ Claude code)
#3185: `@JsonIdentityInfo` with `@JsonCreator` incorrectly sets a field
 (reported by Auke S)
#3194: Deserialization of 2-dimensional arrays of final types fails when
  using `DefaultTyping.NON_FINAL`
 (reported by Klaas D)
 (fix by @cowtowncoder, w/ Claude code)
#3205: ConfigOverrides for merging are not applied for items inside containers
 (reported by Daniel G)
 (fix by @cowtowncoder, w/ Claude code)
#3209: Polymorphism with aliases fails to utilize alias fields
 (reported by @Dragas)
 (fix by @cowtowncoder, w/ Claude code)
#3216: Delegating `@JsonCreator` does not prevent unnecessary introspection
  of properties, leading to bogus failure
 (reported by @awildturtok)
 (fix by @cowtowncoder, w/ Claude code)
#3229: Existing instance of a local/anonymous Class cannot be updated
 (reported by @avshenuk)
 (fix by @cowtowncoder, w/ Claude code)
#3316: Deserialization of a date with `@JsonFormat` specified with locale
  that is not a language tag
 (reported by @MarkDavoren)
 (fix by @cowtowncoder, w/ Claude code)
#3355: Deserialization fails depending on the order of deserialized objects with
  "Cannot construct instance (although at least one Creator exists)"
 (reported by @dinopraso)
 (fix by @JacksonJang)
#3547: When using type id with `As.EXTERNAL_PROPERTY` together with
  `@JsonValue` inside type the serialiser omits external type id field
  from result when `@JsonValue` value is null
 (reported by Aurimas N)
 (fix by @cowtowncoder, w/ Claude code)
#3573: Inconsistent handling of nil `UUID` in property inclusion
 (reported by Andrzej L)
#3591: Ignored fields not consistently exposed via
  `BeanDescription.getIgnoredPropertyNames()`
 (requested by Oliver D)
 (fix by @cowtowncoder, w/ Claude code)
#3604: Allow use of `JsonNode` field for `@JsonAnyGetter`
 (fix by @cowtowncoder, w/ Claude code)
#4014: No way to combine `@JsonTypeInfo(include = As.PROPERTY)` and
  `@JsonIdentityInfo(generator = PropertyGenerator.class)`
 (reported, fix by Knut W)
#4758: `ConfigOverride` using `Nulls.AS_EMPTY` does not work
  with `@JsonManagedReference`
 (reported by Robert R)
 (fix by @cowtowncoder, w/ Claude code)
#4983: `JsonTypeInfo.Id.MINIMAL_CLASS` generates invalid type on sub-package
 (reported, fix by Benoit C-L)
#5281: Reading into existing instance uses creator property setup instead
  of mutator (setter, field)
 (reported by @odrotbohm)
 (fix by @cowtowncoder, w/ Claude code)
#5330: `@JsonProperty`on enum values with
  `@JsonFormat(shape = JsonFormat.Shape.NUMBER)` is ignored
 (reported by Christoffer H)
 (fixed by Lee H)
#5353: Preserve order of `@JsonAnySetter` creator property arguments
 (suggested by Eran L)
 (fix by @cowtowncoder, w/ Claude code)
#5615: JsonMapper seems to be not thread-safe when using the polymorphic
  `JsonTypeInfo.As.PROPERTY` definition (and `@JsonIgnoreProperties`)
 (reported by @xC0DEBA5E)
 (fix by @cowtowncoder, w/ Claude code)
#5727: `VisibilityChecker` overrides `equals()` without overriding `hashCode()`
 (reported by @shanjiang98)
 (fix by @cowtowncoder, w/ Claude code)
#5734: `DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES` treats
  absent field same as explicit `null`
 (reported by Martin U)
#5745: Ability to change active JsonView on submodels (with `@JsonApplyView`)
 (contributed by Frederic A)
#5821: Fix dead code and side-effect bug in `BeanPropertyWriter.toString()`
 (fix by @pjfanning)
#5851: Regression of `JsonTypeInfo.Id.MINIMAL_CLASS` in the 3.x branch
 (reported by @wrongwrong)
 (fix by @cowtowncoder, w/ Claude code)
#5860: Add new extension point for `ObjectMapper`, `ObjectWriter`: handler
 `GeneratorInitializer` called immediately after `JsonGenerator` created,
  before used
(fix by @cowtowncoder, w/ Claude code)
#5861: Allow injecting `MissingNode` for "absent" `JsonNode` via Creator (with
  `JsonNodeFeature.MAP_ABSENT_TO_MISSING`)
 (fix by @cowtowncoder, w/ Claude code)
#5872: ObjectId resolution with Builder fails for interface types
  (`UnresolvedForwardReference`)
 (fix by @cowtowncoder, w/ Claude code)
#5897: Excessive `TokenBuffer` allocations when deserializing records
 (fix by Viktor S, w/ Claude code)
#5909: Forward Object Id references inside Collection properties
  leak Builder instance (follow-up to #1496)
 (fix by Daniel P)
#5937: Add `SerializationContext.withActiveView()`
 (implemented by @cowtowncoder)
#5946: Forward Object Id references inside typed Array (T[] where T
  is NOT `java.lang.Object`) not handled correctly
 (fix by @cowtowncoder, w/ Claude code)
#5952: `@JsonIgnore` does not prevent passing of property to `@JsonAnySetter`
 (reported by Omkhar A)
 (fix by @cowtowncoder, w/ Claude code)
#5958: `@JsonView` ignored with `@JsonTypeInfo(include = As.EXTERNAL_PROPERTY)`
 (fix by Omkhar A)
#5960: Deprecate un-maintained `tools.jackson.databind.jsontype.impl.SubTypeValidator`
#5975: Parameters with an `ImplicitPropertyName` that matches the name of
  a property marked as `READ_ONLY` are ignored during deserialization
 (reported by @wrongwrong)
 (fix by @cowtowncoder, w/ Claude code)
#5977: Apply per-property DYNAMIC typing override to `ObjectArraySerializer`
 (fix by Lee Jiwon)
#5980: Property-based Creator clobbers enclosing value's `JsonParser.currentValue()`
 (reported by Desmond K)
 (fix by @cowtowncoder, w/ Claude code)
#6010: `WRITE_ENUMS_TO_LOWERCASE` must use `Locale.ROOT` for case folding
 (fix by Lee Jiwon)
#6017: Make `@JsonUnwrapped` compatible with `@JsonSerialize(converter = )`
 (reported by Manuel H)
 (fix by @cowtowncoder, w/ Claude code)
- Remove project-specific Android SDK compatibility level, use shared;
  no change level itself (stillAndroid SDK 34)

3.1.8 (not yet released)

#6206: Report cycle through `@JsonValue` accessor as `DatabindException`
  (instead of `StackOverflowError`)
 (fix by @pjfanning, w/ Claude code)
#6227: `BeanDescription` is not thread-safe when called concurrently on the
  same instance (`findProperties()`, `findDefaultViews()`)
 (reported by @sergeylappo)
 (fix by @pjfanning, w/ Claude code)
#6232: Validate `StreamReadConstraints` number length when coercing `StringNode`
  to number
 (fix by Aysha A-Z)
#6236: Retain `JsonFormat.Shape` in `withFormat()` of `Month`, `MonthDay`, `Year`
  and `YearMonth` serializers
 (fix by @cowtowncoder, w/ Claude code)
#6240: `@JsonValue` ignored on getter also annotated with `@JsonKey`
 (fix by @kimsanhaa)
#6246: Creator properties not renamed for `@JsonUnwrapped` with prefix/suffix
  with `MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES`
 (fix by @cowtowncoder, w/ Claude code)
#6249: Avoid NPE when parser reports `VALUE_STRING` with `null` text
 (fix by @pjfanning, w/ Claude code)
#6252: `@JsonIgnoreProperties` not honored for `EnumMap` properties
 (fix by Aysha A-Z)
#6261: Support `@JsonView` on properties-based Creator parameters of Enum, Map
  and EnumMap types
 (fix by @pjfanning, w/ Claude code)

3.1.7 (21-Sep-2026)

#6157: `@JsonIncludeProperties` not honored for `Throwable` types with
  `@JsonAnySetter`
 (fix by Aysha A-Z)
#6174: Honor `@JsonView` in `ThrowableDeserializer.deserializeFromObject()`
 (fix by Aysha A-Z)
#6179: Apply `StreamReadConstraints` number length limit when coercing String
  to `double`
 (fix by Aysha A-Z)
#6182: `StdDateFormat.<clinit>` degrades JIT compilation of
  `UTF8JsonGenerator._writeStringSegment`
 (fix by Francesco N)
#6185: Bracket unresolved IPv6 host name in `InetSocketAddress` serialization
 (fix by @pjfanning, w/ Claude code)
#6203: Prevent unbounded growth of type id cache in `TypeDeserializer`
  [CVE-2026-91776]
 (reported by @dabirt)
 (fix by @pjfanning)
#6204: Avoid quadratic forward-reference resolution in Collection/Map
  deserializers [CVE-2026-91777]
 (reported by @dabirt)
 (fix by @pjfanning)
#6205: Avoid quadratic forward-reference resolution in `ObjectArrayDeserializer`
 (fix by @pjfanning, w/ Claude code)
#6214: `DecimalNode` to `BigInteger` conversion no longer guarded by
  `StreamReadConstraints.validateBigIntegerScale()` (regression from 2.x)
 (fix by @pjfanning, w/ Claude code)

3.1.6 (14-Aug-2026)

#6096: Honor `@JsonView` in `BeanAsArrayDeserializer` update path
 (fixed by Aysha A-Z)
#6099: Resolve classes without initialization in `TypeFactory.findClass()`
 (fixed by Aysha A-Z)
#6101: `@JsonInclude(NON_EMPTY, content=CUSTOM)` does not omit a Map property
  after all entries are filtered
 (reported by @dlwldnjs1009)
 (fix by @seonwooj0810)
#6109: Mark built-in JDK 8 handlers (`Optional`, `Stream`) with `@JacksonStdImpl` so
  optimization modules (Blackbird) can retain optimized handlers
 (fix by Lee Jiwon)
#6115: Honor `@JsonIgnoreProperties` before any-setter on more deser paths
 (fix by Aysha A-Z)
#6116: Reject non-ASCII digits in `InetAddress` literal validation
 (fixed by Aysha A-Z)
#6127: Add `StreamReadConstraints` number len constraint to `javax.xml.datatype.XMLGregorianCalendar`
  and `javax.xml.datatype.Duration` [CVE-2026-68497]
 (reported by @waydeshi)
 (fix by @pjfanning)
#6129: Limit the supported URL schemes for `java.nio.file.Path`
  deserialization [CVE-2026-19032]
 (reported by @waydeshi)
 (fix by @pjfanning)
#6133: Limit number sizes allowed in `java.time.Instant` deserializer
 (fix by @pjfanning)
#6137: `DefaultCacheProvider.Builder` does not preserve default cache sizes
  for unspecified values
 (reported, fixed by DongNyoung L)
#6156: Add `java.lang.Comparable` in set of "unsafe" polymorphic base types
  [CVE-2026-83557]
 (reported by @prvazsahnazarov)
#6165: Apply number length limits to `BigDecimal`/`BigInteger`/`Double`/`Float` Map keys
 (fix by Aysha A-Z)

3.1.5 (07-Jul-2026)

#6040: Inconsistency in current token on invalid type coercion for `List<String>`
 (reported by João G)
 (fix by @cowtowncoder, w/ Claude code)
#6048: Apply content converters for String collection values (`StringCollectionDeserializer`)
 (fixed by Lee Jiwon)
#6055: Honor `@JsonView` for external-type-id (`EXTERNAL_PROPERTY`)
  properties [GHSA-mhm7-754m-9p8w]
 (reported by @Sharlong-Wen)
#6058: Do not allow DNS resolution when deserializing `InetAddress` [CVE-2026-77310]
 (reported by @thientd)
 (fix by @pjfanning)
#6060: `@JsonView` by-passed for `@JsonUnwrapped` Field/Setter properties [CVE-2026-59889]

3.1.4 (29-May-2026)

#5950: Improve `UUIDDeserializer` error handling
 (reported, fix suggested by Omkhar A)
#5951: Improve `InetSocketAddress` deserialization [CVE-2026-54514]
 (reported by Omkhar A)
#5956: Fix problem with float-to-byte range check
 (reported, fix suggested by Omkhar A)
#5957: Improve `java.time.Month` deserialization validation
 (fix by Omkhar A)
#5962: Case-insensitive deserialization may use wrong `@JsonIgnoreProperties`
 [CVE-2026-54515]
 (fixed by Omkhar A)
#5967: Renamed `@JsonIgnore`d setters can deserialize via private fields
 [CVE-2026-54516]
 (fixed by Omkhar A)
#5969: `@JsonView` by-passed for some "setterless" creator properties
 [CVE-2026-54517]
 (fixed by Omkhar A)
#5971: `@JsonView` by-passed for unwrapped creator parameters [CVE-2026-54518]
 (fixed by Omkhar A)
#5974: `@JsonIgnore` on Record property ignored with `PropertyNamingStrategy` [CVE-2026-59888]
 (fixed by Omkhar A)
#5981: `BasicPolymorphicTypeValidator` setting `allowIfSubTypeIsArray()`
  should validate element type [CVE-2026-54513]
 (reported by Omkhar A)
 (fix by @cowtowncoder, w/ Claude code)
#5988: `PolymorphicTypeValidator` needs to validate generic type parameters too
 [CVE-2026-54512]
 (reported by Omkhar A)
 (fix by @cowtowncoder, w/ Claude code)
#5993: `UPPER_SNAKE_CASE` / `LOWER_CASE` `NamingStrategyImpls` fold case
  using JVM default locale (Turkish-I bug)
 (fix by @CharmingKyu)
#6001: Regression with `@JsonUnwrapped` from 3.0 to 3.1: custom unwrapping
  deserializer receives empty Object
 (reported by Severin K)
 (fix by @cowtowncoder, w/ Claude code)
#6011: Add `MapperFeature.FIX_FIELD_NAME_UPPER_CASE_PREFIX` in
  `MapperBuilder.configureForJackson2()`
 (suggested by Dmitry S)

3.1.3 (01-May-2026)

#5898: `DoubleDeserializer` rejects "+INF"/"+Infinity" despite accepting
  "INF"/"Infinity" and "-INF"/"-Infinity"
 (reported by Kenta Y)
 (fix by @cowtowncoder)
#5911: Deserialization failed with `@JsonUnwrapped` and `@JsonAlias` on
  a property of the unwrapped type
 (reported by Lucas C)
 (fix by @cowtowncoder, w/ Claude code)
#5918: Creator properties always come first in 3.x
 (reported by Marco B)
 (fix by @cowtowncoder)
#5923: Deserialization behavior change with Records, `@JsonCreator` and `@JsonValue`
 (reported, fixed by Joshua A)
#5925: Pass dynamic serializer for `Iterable` content filtering
 (fixed by Lee Jiwon)
#5931: Fix `AtomicLongDeserializer` value truncation on coerced values
 (fixed by Lee Jiwon)
#5941: `MapperBuilder.addModule()` does not recursively register transitive
  module dependencies (3.x regression from 2.x)
 (reported by Michael O)

3.1.2 (11-Apr-2026)

#5857: `TypeFactory._fromParamType` StackOverflowError with mutually recursive
  generic bounds (regression in 3.1.0, introduced by fix for [databind#5285])
 (reported by @sylvaindd)
 (fix by @pjfanning w/ @Copilot)
#5865: `@JsonIgnoreProperties` does not work alongside
  `DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES`
 (reported by Lavender S)
 (fix by @cowtowncoder, w/ Claude code)
#5867: Fix `Map.Entry` deserialization for property-level
  `Shape.NATURAL` override
 (fixed by Lee Jiwon)
#5870: `EnumMap` and `EnumSet` properties ignore `@JsonDeserialize(contentConverter)`
 (fixed by Lee Jiwon)
#5884: Exception when using `@JsonUnwrapped` alongside with `@JsonAlias`
  on another property
 (reported by Aleksandr G)
 (fix by @cowtowncoder, w/ Claude code)
#5891: `EnumMapDeserializer._deserializeUsingProperties()` corrupts parser
  state after skipping unknown enum keys
 (fixed by Lee Jiwon)

3.1.1 (27-Mar-2026)

#5710: `ObjectWriter` transforms polymorphic types into a tree incompletely
 (reported by Brandon S)
 (fix by @cowtowncoder, w/ Claude code)
#5716: `@JsonUnwrapped` properties moved to end in 3.1.0
 (reported by Viktor S)
 (fix by @cowtowncoder, w/ Claude code)
#5728: `@JsonUnwrapped`doesn't work for delegating ValueDeserializer (even
  one delegating to `BeanDeserializerBase`)
 (reported by Alessandro N)
#5785: Wrong path in `InvalidFormatException` for nested fields
  and `BuilderBasedDeserializer`
 (reported and fixed by David A)
#5786: Regression in `TokenBuffer#forceUseOfBigDecimal`
 (reported by Sébastien D)
 (fix by @cowtowncoder, w/ Claude code)
#5813: `JsonMapper` not thread-safe when using custom serializers
 (reported by Stephan L)
 (fix by @pjfanning)
#5814: Enum deserialization does not respect
  `JsonFormat.Feature.ACCEPT_CASE_INSENSITIVE_VALUES` override
 (reported by David N)
 (fix by @cowtowncoder, w/ Claude code)
#5819: `JsonNodeFeature.STRIP_TRAILING_BIGDECIMAL_ZEROES` not
  working with `ObjectMapper.valueToTree()`
 (reported by @pankajxeine)
 (fix by @cowtowncoder, w/ Claude code)
#5840: Jackson 2.21 throws Conflicting property-based creators if both
  default (0-arg) and multi-arg constructor annotated
 (reported by Alexey T)
 (fix by @pjfanning)

3.1.0 (23-Feb-2026)

#221: Support alternate radixes when writing numeric values as strings
 (requested by Christopher C)
 (implementation by Davyd F)
#429: Cannot use property annotations on `StackTraceElement` to configure
  deserialization
 (reported by Gary G)
#650: `@JsonUnwrapped` prevents checks for
  `DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES`
 (reported by Konstantin L)
 (fix by @JacksonJang)
#1196: Add opt-in error collection for deserialization
 (requested by @odrotbohm)
 (contributed by @sri-adarsh-kumar)
#1391: Default typing adds typing info to collections even with
  `@JsonTypeInfo(use = Id.NONE)` override
 (reported by Jeff M)
 (fix by @cowtowncoder, w/ Claude code)
#1419: `JsonFormat.Shape.POJO`  does not work for `Map.Entry` via property annotation
 (fix by @cowtowncoder, w/ Claude code)
#1497: Allow skipping `@JsonUnwrapped` values if no properties matched,
  `DeserializationFeature.USE_NULL_FOR_EMPTY_UNWRAPPED` enabled
 (requested by Victor N)
 (fix by @JacksonJang)
#1516: Problem with multi-argument Creator with `@JsonBackReference` property
 (reported by @sarahlikesglitter)
 (fix by @JacksonJang)
#1649: `@JsonInclude(content=)` not working for `Map`-valued properties via
  POJO class annotation
 (fix by @cowtowncoder, w/ Claude code)
#1654: @JsonDeserialize(contentUsing=...) is ignored if content
  type is determined by @JsonTypeInfo
 (reported by @pdegoeje)
 (fix by @cowtowncoder, @JacksonJang)
#1811: `@JsonAnySetter` and `@JsonUnwrapped` deserialize property twice
 (reported by @jearton)
#1980: Add method `remove(JsonPointer)` in `ContainerNode`
 (fix by @cowtowncoder, w/ Claude code)
#2124: Allow coercion of '[ ]' into empty/null String with
  `ACCEPT_EMPTY_ARRAY_AS_NULL_OBJECT`
 (reported by Ulf A)
 (fix by @cowtowncoder, w/ Claude code)
#2343: Add `JsonNode.asArray()` and `JsonNode.asObject()`
 (requested by Victor N)
#2438: Prevent use of setter/field in case Creator property
  already exists, duplicate value seen
#2617: `@JsonDeserialize.converter` from an interface doesn't work
 (reported by Erik H)
#2624: Allow overriding builder's "withPrefix" with new
  `@JsonDeserialize.builderPrefix` property
 (requested by Kenneth J)
#2686: `@JsonBackReference` does not work with a builder
 (reported by @janrieke)
 (fix by @JacksonJang)
#3079: Support `ObjectMapper.updateValue()` for Record classes
 (requested by Dávid C)
#3084: `Nulls.AS_EMPTY` doesn't work for collections containing
  values without default constructor (like Records)
 (reported by Krzysztof K)
 (fix by @cowtowncoder, w/ Claude code)
#3163: Huge performance problem deserializing `java.nio.file.Path`
  with existing Windows Samba/CIFS mounts
 (reported by @Gaibhne)
#3188: Skip unknown `Enum` keys in `Map` deserialization
 (requested by @matthias-mueller)
 (fixed by Lee Jiwon)
#3284: Backward compatibility for timezone formats of UTC Date
  serialization
 (requested by @arungitan)
 (implemented by Lee Jiwon)
#3304: Backreference not set after deserialization for Abstract types
  with `@JsonBackReference` only in sub-type
 (reported by @Njimefo)
#3349: `DeserializationProblemHandler.handleUnexpectedToken()` no longer
  invoked for array-like types
 (reported by @andpal)
#3786: Deserialization of generic container (of Record type) using `EXTERNAL_PROPERTY`
  fails for "natural" types (`boolean`/`long`/`String`/`double`) because
  type information is missing
 (fix by @cowtowncoder, w/ Claude code)
#3964: Deserialization issue: MismatchedInputException, Bean not
  yet resolved
 (reported by @detomarco)
#4118: Deserialization of a certain kinds of parametrized properties fail to
  resolve `?` into expected bounds, resulting in `LinkedHashMap`
 (reported by @Mariusz)
 (fix by @cowtowncoder, w/ Claude code)
#4157: Add `MapperFeature.INFER_RECORD_GETTERS_FROM_COMPONENTS_ONLY` to ignore
  getter method auto-detection for Records
 (suggested by Garret W)
 (fix by @cowtowncoder, w/ Claude code)
#4277: Deserialization `@JsonFormat(shape = JsonFormat.Shape.ARRAY)` POJO with
  `JsonTypeInfo.As.EXTERNAL_PROPERTY` does not work
 (reported by James M)
 (implemented by @cowtowncoder, w/ Claude code)
#4629: `@JsonIncludeProperties` and `@JsonIgnoreProperties` ignored when
  deserializing Records
 (reported by Sim Y-T)
 (fix contributed by @JacksonJang)
#4690: InvalidDefinitionException "No fallback setter/field defined for
  creator property" when deserializing JSON with dup property to single-property Record
 (reported by @sseelmann)
 (fix contributed by @JacksonJang)
#4708: `JsonTypeInfo.Id.DEDUCTION` should block signatures for non-instantiable
  types (abstract classes, interfaces)
 (implemented by @cowtowncoder, w/ Claude code)
#4729: Object ID handling tries (unnecessarily) to set id value on a Record
 (reported by John H)
 (implemented by @cowtowncoder, w/ Claude code)
#5115: `@JsonUnwrapped` Record deserialization can't handle name collision
 (reported by Viktor S)
 (fix contributed by @JacksonJang)
#5184: `@JsonIgnore` on record method applied to record matching field
  at deserialization
 (reported by @emouty)
#5188: Prevent use of unsupported `@JsonManagedReference`/`@JsonBackReference`
  for Record-valued properties
 (reported by @JBodkin-Amphora)
 (implemented by @cowtowncoder, w/ Claude code)
#5223: Java Records missing type information with `DefaultTyping.NON_FINAL`
  (add `DefaultTyping.NON_FINAL_AND_RECORDS`)
 (requested by @cndqjacndqja)
 (implemented by @chanwonlee)
#5285: Generics using wildcard not correctly resolved
 (reported by @wimdeblauwe)
 (implemented by @cowtowncoder, w/ Claude code)
#5312: `JsonInclude.Include.NON_DEFAULT` regression for objects with `@JsonValue`
 (reported by @LSwiatek)
 (implemented by @cowtowncoder, w/ Claude code)
#5350: Add `DeserializationFeature.USE_NULL_FOR_MISSING_REFERENCE_VALUES` for
  selecting `null` vs "empty/absent" value when deserializing missing `Optional` value
#5361: Fix Maven SBOM publishing (worked in 3.0.0-rc4 but not in rc5 or later)
(date-time)#359: `InstantDeserializer` deserializes the nanosecond portion of
  fractional negative timestamps incorrectly
#5369: Support `@JsonInclude.content` for `Collection`s
  (with `SerializationFeature.APPLY_JSON_INCLUDE_FOR_CONTAINERS`)
 (implementation by Joo-Hyuk K)
#5405: `@JsonFormat(shape = Shape.POJO)` does not work for `java.util.Map`
  serialization via property annotation
 (fix contributed by @JacksonJang)
#5413: Add/support forward reference resolution for array values
 (contributed by Hélios G)
#5442: Make `JsonMapper/ObjectMapper` fully proxyable by CGLIB
 (fix contributed by Fouad A)
#5456: Additional configuration (`JsonNodeFeature.STRIP_TRAILING_BIGDECIMAL_ZEROES`: true)
  to MapperBuilder#configureForJackson2 to closer match Jackson 2 behavior
 (contributed by @nrayburn-tech)
#5469 : Add callback in `DeserializationProblemHandler` for "null for primitive"
  problem case
 (reported by @jnizet)
 (fixed by Joo-Hyuk K)
#5475: Support `@JsonDeserializeAs` annotation
 (implemented by @cowtowncoder, w/ Claude code)
#5485: Unchecked conversion warning in `JsonMapper` wrt `TreeCodec.readTree()`
  override
 (reported by Francesco C)
#5515: Support `@JsonInclude.content` for Arrays
 (implemented by @JacksonJang)
#5519: Add 2 new `JavaTimeFeature`s: (`TRUNCATE_TO_MSECS_ON_WRITE`,
  `TRUNCATE_TO_MSECS_ON_READ`) for truncating `java.time` values before serialization,
  after deserialization
 (implemented by @cowtowncoder, w/ Claude code)
#5522: `@JsonFormat(with = JsonFormat.Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY)`
  doesn't work on custom Collection subclass
 (contributed by Jaeheon K)
#5528: `TreeBuildingGenerator#writeNumber(String)` writes Number as String
 (reported by @gaeljw)
#5541: Add missing `@JsonIdentityInfo` handling for implicit arrays with
  `DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY`
 (contributed by Moritz R)
#5542: `ObjectReader.readValue()` does not fail when
  `DeserializationFeature.FAIL_ON_UNRESOLVED_OBJECT_IDS` enabled
 (implemented by @cowtowncoder, w/ Claude code)
#5558: Change defaulting of `JsonNode.asXxx(defaultValue)`/`JsonNode.asXxxOpt()`
  for `NullNode`
 (contributed by Filip H)
#5570: Add `MapperFeature.WRAPPERS_DEFAULT_TO_NULL` to allow configuring
 `JsonInclude.Include.NON_DEFAULT` default for primitive wrapper types to be `null`,
  not wrapped default of primitive
#5575: Allow configuring a default serialization and deserialization view (3.x)
 (requested by Réda H-A)
 (implemented by @cowtowncoder, w/ Claude code)
#5579: Add `JsonNode.map()` method
#5581: Add functional conversion methods `JsonNode.nullAs()`, `JsonNode.missingAs()`
#5583 Improve `asXxx()` method impls of `MissingNode`, `POJONode(null)`,
  to work like `NullNode`
 (implemented by @cowtowncoder, w/ Claude code)
#5586: Change `IndexOutOfBoundsException` that `ArrayNode.set()`/`replace()`
  throw to `JsonNodeException`
#5595: Add `FunctionalScalarDeserializer` for functional-style deserialization
 (contributed by @jhan0121)
#5599: Reduce mutability of `JsonFormatVisitor` types in 3.1
#5616: `ObjectWriter` serializes `Optional`s with subtypes incompletely
 (reported by Brandon S)
 (implemented by @cowtowncoder, w/ Claude code)
#5621: Fix typo: MissingInjectableValueExcepion → MissingInjectableValueException
 (implemented by Lee Jiwon)
#5630: Add `DelegatingSerializer`
 (contributed by Matthew L)
#5631: Rename `StdDelegatingSerializer` to `StdConvertingSerializer` (3.0->3.1)
#5642: Wrap `DateTimeException` and `ArithmeticException` in new
  `DateTimeParseException` during java.time deserialization
 (implemented by @pjfanning)
#5646: `ObjectArrayDeserializer` may throw `ArrayStoreException` for some special cases
 (fixed by @cowtowncoder, w/ Claude code)
#5649: Wrap `LocalDate.ofEpochDay()` and `Instant.ofEpochSecond()` to throw
  `DateTimeParseException` on invalid values
 (implemented by @pjfanning)
#5674: Fix NPE when deserializing `Throwable` with `null` "stackTrace"
 (fix by @pjfanning)
#5683: When deserializing using `ObjectMapper::treeToValue`, NPE occurs
  when `JsonParser::readValueAs` is called
 (reported by @wrongwrong)
#5685: Fix issue where `_findSerializer()` was called with incorrect argument in
  `StdDelegatingSerializer::isEmpty()`
 (fixed by @wrongwrong)
#5686: Fix NPE where code can look for an objectId when no `_objectIdReader` is set
 (fix by @pjfanning)
#5691: Validate `ByteBufferBackedInputStream.read()` parameters per `InputStream`
 contract
 (fix by @pjfanning)
#5706: `TokenBuffer` serialization fails when buffer contains integer
  encoded as String
 (reported by Kyrylo M)

3.0.4 (21-Jan-2026)

#1288 (regression in 3.0.0) Type id not exposed for `JsonTypeInfo.As.EXTERNAL_PROPERTY`
  even when `visible` set to `true`
#2580: Regression with External type id / Build deserialization in 3.0
#4742 (regression in 3.0.0) Deserialization with Builder, External type id,
  `@JsonCreator` failing
#5481: JsonMapper.Builder.modules(...) ignores changes after build() due to
  internal saveState
 (reported by @libetl)
 (fix by @cowtowncoder, w/ Claude code)

3.0.3 (28-Nov-2025)

#5393: `@JsonAnyGetter` property gets included in generated schema
 (reported by @victor-noel-pfx)
 (fix by Joo-Hyuk K)
#5398: `@JsonProperty.value` + `@JsonIgnore` on setter does not work
  anymore since 2.18.4
 (reported by @victor-noel-pfx)
 (fix by @cowtowncoder, w/ Claude code)
#5401: Regression with `@JsonCreator` that returns `null` for empty strings
 (fix contributed by Joost K)
#5408: Jackson 3 `JsonNode#required(java.lang.String)` throws `JsonNodeException`
  different from JavDoc
 (reported by @jochenberger)
 (fix by Joo-Hyuk K)
#5414: `NullPointerException` in `AnnotatedMember.annotations()` when
  no annotations are present
 (reported by Benjamin H)
#5416: Annotations on an interface that's part of a JDK proxy are not honored
  with Jackson 3
 (reported by Andy W)
 (fix contributed by Fouad A)

3.0.2 (07-Nov-2025)

#5203: Fix `null` handling of `EnumSetDeserializer`
#5372: Wrong setter is used when deserializing from `InputStream` (or `byte[]`)
   (NOTE: actual fix via jackson-core#1491)
 (reported by @quaff)

3.0.1 (21-Oct-2025)

#5335: JsonMapper to deserialize `Optional.empty()` instead of `null`
  in case of missing property (2.x compatibility)
 (^^^ REVERT #3601)
 (reported by @wendigo)
#5340: `DeserializationFeature.ACCEPT_FLOAT_AS_INT` not respected for byte/short
  when deserializing from JsonNode
 (reported by @Artur)
#5344: "Unexpected end-of-input" for `JsonParser.readValueAs()` (in 3.0)
 (reported by Phil C)
#5354: jackson-databind 3.0.0 renders `callbacks` property from Spring CGLIB Proxy
 (reported, fix contributed by Rob W)

3.0.0 (03-Oct-2025)

#5319: `TreeTraversingParser` does not respect `DeserializationFeature.ACCEPT_FLOAT_AS_INT`
 (reported by @Artur)
#5323: `UUID` serialization is broken in v3.0.0-rc9
 (reported by Dónal M)

3.0.0-rc10 (19-Sep-2025)

#5272: Replace `ObjectMapper.getRegisteredModuleIds()` (2.x) with
  `ObjectMapper.registeredModules()` (3.0)
#5302: Add one more parameter for `AnnotationIntrospector.findPreferredCreator()` method
#5309: Confusing exception for `DoubleNode` to `Integer` conversion in Jackson 3
 (reported by @caalador)
 (fixed by Joo-Hyuk K)
#5314: Add `MapperFeature.DETECT_PARAMETER_NAMES` to allow disabling `parameter-names`
  functionality
 (fixed by Joo-Hyuk K)
#5318: Allow auto-detection of Properties-based Constructor even if class has
  no-parameters (default) Constructor

3.0.0-rc9 (05-Sep-2025)

#4310: `ParameterNamesModule` causes `@ConstructorProperties` to be ignored,
  constructor called with null value
 (reported by Lars B)
#5244: Support accessing annotations via `AnnotatedMember.annotations()`
 (requested by David N)
#5263: Remove deprecated `URL`-taking `readValue()` methods in `ObjectMapper`,
  `ObjectReader` from 3.0
#5270: Remove `ObjectMapper.setSerializationInclusion()` from 3.0 (deprecate in 2.20)
#5287: Change JsonNode.stringValue() of NullNode to return null, not fail (3.0)

3.0.0-rc8 (13-Aug-2025)

No changes since 3.0.0-rc7

3.0.0-rc7 (08-Aug-2025)

#5231: Deserialization through setter with `vararg` parameter fails `ClassCastException`
 (reported by @tsegall)
 (contributed by Joo-Hyuk K)

3.0.0-rc6 (18-Jul-2025)

#5225: `NullPointerException` in `ObjectMapper.valueToTree(UUID)`
 (reported by @ kiryong-lee)

3.0.0-rc5 (22-May-2025)

#4907: Reduce/eliminate introspection on `java.*` classes
 (requested by Guillaume S)
#5158: Add "optional" variants -- shortValueOpt(), floatValueOpt(), asShortOpt(),
  asFloatOpt()
 (contributed by Yu Han)
#5169: Add missing methods in `Serializers` for Enum and TreeNode types (3.0)

3.0.0-rc4 (10-May-2025)

#1484: Changed default of `MapperFeature.DEFAULT_VIEW_INCLUSION` to `false` in 3.0
#2083: Replace Reflection usage with `MethodHandle` (3.0)
 (contributed by Steven S)
#5078: Create proper `MonthDeserializer` and `MonthSerializer` (don't rely
  on `EnumDeserializer`/`EnumSerializer`)
 (fixed by Joo-Hyuk K)
#5093: Change the way `BeanDescription` passed during serializer construction
 to use `Supplier`
#5094: Change the way `BeanDescription` passed during deserializer construction
 to use `Supplier`
#5110: Add missing `ObjectMapper#createNonBlockingByteBufferParser()` method
 (requested by Sébastien D)
#5111: Improve support for deserializing from `TokenBuffer` (f.ex for
  content buffered for non-blocking parsing)
 (requested by Sébastien D)
#5112: Add a `MapperBuilder#findAndAddModules(ClassLoader)` variant
 (requested by Sébastien D)
#5138: add `asShort()`, `asFloat()` conversion methods
 (contributed by Yu Han)
#5153: Improve error handling for numeric values in `POJONode`
 (contributed by Yu Han)

3.0.0-rc3 (13-Apr-2025)

#4603: Keep full stacktrace when re-throwing exception with
  `DatabindException` during deserialization
 (fixed by Joo-Hyuk K)
#5032: Move `jackson-datatype-jsr310` module into `jackson-databind` and
  rename `JavaTimeFeature` from `jackson-datatype-jsr310` module as `DateTimeFeature`
 (implemented by @pjfanning)
#5065: Change default for `DateTimeFeature.ONE_BASED_MONTHS` to `true` in 3.0
#5066: Move date/time `SerializationFeature`s into `DateTimeFeature` (3.0)
#5067: Move date/time `DeserializationFeature`s into `DateTimeFeature` (3.0)
#5079: Move Enum-related DeserializationFeatures into EnumFeature (3.0)
 (contributed by Joo-Hyuk K)
#5080: Move Enum-related SerializationFeatures into EnumFeature (3.0)
 (contributed by Joo-Hyuk K)
- Branch rename "master" -> "3.x" [JSTEP-12]

3.0.0-rc2 (28-Mar-2025)

#2882: Tighten accessor naming rules to not allow leading lower-case or
  non-letter character for getters/setters
#5003: Extend, improve set of `JsonNode.asXxx()` methods for number types
#5025: Add support for automatic detection of subtypes (like `@JsonSubTypes`)
  from Java 17 sealed types
 (contributed by Andy B)
#5034: Extend, improve set of `JsonNode.asXxx()` methods for non-number
  types (Boolean, String)

3.0.0-rc1 (07-Mar-2025)

#493: Change `DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES` default to `false`
 (contributed by Joo-Hyuk K)
#1058: Add a way to pass std and format-specific parser/generator flags during
  parser/generation construction
#1600: Serializing locale with underscore, not standard hyphen
 (requested by Alexander K)
#1762: `StdDateFormat`: serialize time offset using colon
#1772: Remove `MapperFeature. USE_STD_BEAN_NAMING`
#1773: Remove `MapperFeature.AUTO_DETECT_xxx` features
#1774: Merge Java8 datatype (`Optional`, `Stream`) support (`jackson-datatype-jdk8`)
#1775: Merge Java8 parameter name support (`jackson-module-parameter-names`)
#1781: Return `ObjectNode` from `ObjectNode` set-methods in order to allow better chaining
 (reported by timo-schmid@github)
#1789: Add `createGenerator` methods in `ObjectMapper`, `ObjectWriter`
#1790: Add `createParser` methods in `ObjectMapper`, `ObjectReader`
#1829: `JsonNode.deepCopy() `ClassCastException`s
 (reported by @D3v01dZA)
#1883: Add "abstract type mapping" for deserialization from `Map<ENUMTYPE,V>`
  into `EnumMap` (and `Set<ENUMTYPE>` to `EnumSet<EnumType>`) 
#1888: Merge `ResolvableSerializer` into `JsonSerializer`, `ResolvableDeserializer`
 into `JsonDeserializer`
#1889: Merge `ContextualSerializer` into `JsonSerializer`, `ContextualDeserializer`
 into `JsonDeserializer`
#1916: Change `MapperFeature.USE_GETTERS_AS_SETTERS)` default to `false`
#1917: Remove `canSerialize` and `canDeserialize` methods from `ObjectMapper`
#1954: Add Builder pattern for creating configured `ObjectMapper` instances
#1955: Change the way `Module`s configure, interact with `ObjectMapper`
#1973: Remove support for "default [Map] key serializer" configuration from
  `SerializerProvider`
#1994: Limit size of `SerializerCache`, auto-flush on exceeding
#1995: Limit size of `DeserializerCache`, auto-flush on exceeding
#2013: Allow use of `java.nio.file.Path` for `readValue()`, `writeValue()`
 (requested by @XakepSDK; contributed by Sven D)
#2040: Remove `JsonSerializer.isEmpty()` from 3.0
#2176: Add `JsonMapper.shared()` static method
#2177: Change parent type of `JsonProcessingException` to be `RuntimeException`
#2382: Support `AutoCloseable` with `SerializationFeature.CLOSE_CLOSEABLE`
 (requested by @Logic-32)
#2405: Make `java.sql.Date` serializer default to same output as `java.util.Date`
#2411: Allow `valueToTree()` via `SerializationContext`, add to `ObjectWriter`
 (requested by @XakepSDK)
#2539: Add `Deserializers.hasDeserializerFor()` (and something for `DeserializerFactory`)
  to allow detection of explicitly supported types
#2593: StackTraceElement w/ >= Java 9 doesn't deserialize properly
 (requested by Michael D)
#2713: Change wording of `UnrecognizedPropertyException` to refer to "property" not "field"
#2828: Add `DatabindException` as intermediate subtype of `JsonMappingException`
#3028: Change `UUIDSerializer` to use `StreamWriteCapability` check instead of
  `JsonGenerator.canWriteBinaryNatively()`
#3037: Rename `Module` as `JacksonModule` in 3.0 (to avoid overlap with `java.lang.Module`)
#3043: Rename `SerializerProvider` as `SerializationContext`
#3044: Rename `JsonDeserializer`/`JsonSerializer` as `ValueDeserializer`/`ValueSerializer`
#3046: Rename `JsonSerializable` as `JacksonSerializable`
#3047: Rename `Bean[De]SerializerModifier` as `Value[De]SerializerModifier`
#3070: Change default for `SerializationFeature.FAIL_ON_EMPTY_BEANS` to `false`
#3406: Change default of `DeserializationFeature.FAIL_ON_TRAILING_TOKENS` to `true`
 (suggested by @yawkat)
#3522: Support serializing `ByteArrayOutputStream` as "simple" Binary value
#3536: Create new exception type `JsonNodeException` for use by `JsonNode`-related problems
#3542: Rename "com.fasterxml.jackson" -> "tools.jackson"
#3561: Add `DeserializationContext` as an argument for `SettableBeanProperty.set(...)`
(REVERTED in 3.0.1) #3601: Change `Optional` deserialization from "absent"
   value into `null`, from "empty"
#4160: Deprecate `DefaultTyping.EVERYTHING` in `2.x` and remove in `3.0`
#4381: Prevent construction of `null`-valued `JsonNode`s (like `TextNode`)
#4552: Change `MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS` default to `false`
#4566: Enable `DeserializationFeature.READ_ENUMS_USING_TO_STRING` by default
 (contributed by Joo-Hyuk K)
#4567: Enable `SerializationFeature.WRITE_ENUMS_USING_TO_STRING` by default
 (contributed by Joo-Hyuk K)
#4572: Change `MapperFeature.SORT_PROPERTIES_ALPHABETICALLY` default to true
 (contributed by Joo-Hyuk K)
#4589: Remove `MapperFeature.SORT_CREATOR_PROPERTIES_BY_DECLARATION_ORDER` from 3.0;
  make logic default
#4659: Remove use of global static `TypeFactory` singleton from 3.0
#4664: Change `EnumNamingStrategy.convertEnumToExternalName()` to take `MapperConfig` argument-
 (contributed by Joo-Hyuk K)
#4818: Rename `AnnotationIntrospector.findDefaultCreator()` as `findPreferredCreator()`
#4820: Change JDK baseline for Jackson 3.0 from Java 8 to Java 17
#4835: Remove dynamic work-arounds wrt accessing `Record` definition
#4840: Increase minimum Android SDK required to 34 for Jackson 3.0
#4845: Change default of `DateTimeFeature.WRITE_DURATIONS_AS_TIMESTAMPSATES_AS_TIMESTAMPS`
  to `false` in 3.0
#4846: Change default of `DateTimeFeature.WRITE_DURATIONS_AS_TIMESTAMPS`
  to `false` in 3.0
#4858: Change default of `DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES`
  to `true` for 3.0
#4875: Remove `JsonNode.fields()` from 3.0
#4879: Rename `TextNode` as `StringNode`; `JsonNode.xxxTextYyy()` (mostly) as
  `JsonNode.xxxStringYyy()` [JSTEP-3]
#4891: Change 3.0 to use `module-info.java` directly for build (instead of via Moditect)
#4956: Rename `JsonNode.isContainerNode()` as `isContainerNode()`
#4958: Extend, improve set of number value accessors for `JsonNode`
  (`JsonNode.intValue()` etc) [JSTEP-3]
#4991: Extend, improve set of non-number scalar value accessors for `JsonNode`
  (`JsonNode.booleanValue()` etc) [JSTEP-3]
#4992: Rename `JsonNodeFactory.textNode()` as `JsonNodeFactory.stringNode()` [JSTEP-3]
#5004: Add `JsonMapper.builderWithJackson2Defaults()`
 (fixed by @pjfanning)
- Remove `MappingJsonFactory`
- Add context parameter for `TypeSerializer` contextualization (`forProperty()`)
- Default for `JsonNodeFeature.STRIP_TRAILING_BIGDECIMAL_ZEROES` changed to `false` for 3.0