Jackson Release 2.12.6

Patch version of 2.12, released on December 15, 2021. Following fixes are included.

Changes, core

Streaming

• #713: Incorrect parsing of single-quoted surrounded String values containing double quotes

Databind

• #3280: Can not deserialize json to enum value with Object-/Array-valued input, @JsonCreator
• #3305: ObjectMapper serializes CharSequence subtypes as POJO instead of as String (JDK 15+)
• #3328: Possible DoS if using JDK serialization to serialize JsonNode [CVE-2021-46877]

Changes, data formats

Ion

• #302: IllegalArgumentException in IonParser.getEmbeddedObject()

XML

• #490: Problem when using defaultUseWrapper(false) in combination with polymorphic types