Jackson Release 2.21.3

Patch version of 2.21, release on April 28, 2026.

Following fixes are included in this patch release.

• #1581: NonBlockingByteBufferParser: Unexpected Illegal surrogate character when parsing field names
• #1597: Rework 3rd party licenses in jar
• #1602: UTF8DataInputJsonParser needs to enforce StreamReadConstraints.maxNameLength limit

• #5840: Jackson 2.21 throws Conflicting property-based creators if both default (0-arg) and multi-arg constructor annotated
• #5870: EnumMap and EnumSet properties ignore @JsonDeserialize(contentConverter)
• #5891: EnumMapDeserializer._deserializeUsingProperties() corrupts parser state after skipping unknown enum keys
• #5898: DoubleDeserializer rejects "+INF"/"+Infinity" despite accepting "INF"/"Infinity" and "-INF"/"-Infinity"
• #5923: Deserialization behavior change with Records, @JsonCreator and @JsonValue

• #686: CBORParser._finishLongTextAscii returns negative length when TextBuffer segment > I/O buffer, leaving non-ASCII byte unconsumed

• #339: @JsonView deserialization filtering is broken when BlackbirdModule is registered