Jackson Release 3.1.8

Patch version of 3.1, under development as of September 2026.

Following fixes will be included in this patch release.

Changes, core

Streaming

• #1724: InvocationTargetException cause may produce misleading messages in wrapWithPath()

Databind

• #6206: Report cycle through @JsonValue accessor as DatabindException
• #6227: BeanDescription.findProperties() is not thread-safe when called concurrently on the same (shared/cached) instance
• #6232: Validate number length when coercing StringNode to number
• #6236: withFormat() of Month, MonthDay, Year, YearMonth serializers drops JsonFormat.Shape
• #6240: @JsonValue ignored on getter also annotated with @JsonKey

Changes, dataformats

Avro

• #797: Apache decoder fails with UnsupportedOperationException when AvroParser.Feature.AVRO_BUFFERING disabled

Jakarta-RS Providers

• #76: Widen jakarta.ws.rs import range for Jakarta EE 11