Jackson Release 2.12.6

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Tatu Saloranta edited this page Sep 2, 2025 · 13 revisions

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

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