CAMEL-23803: block unsafe polymorphic base types by default in camel-jackson-avro and camel-jackson-protobuf (backport to 4.14.x)#24198
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…jackson-avro and camel-jackson-protobuf (backport to 4.14.x) The camel-jackson-avro and camel-jackson-protobuf data formats now create their default AvroMapper / ProtobufMapper with MapperFeature.BLOCK_UNSAFE_POLYMORPHIC_BASE_TYPES enabled, mirroring the hardening applied to camel-jackson (CAMEL-23786) and camel-jacksonxml (CAMEL-23787) and to their respective transform/ mappers. This is defense-in-depth against gadget-chain deserialization: when polymorphic / default typing is enabled, Jackson refuses unsafe base types (Object, Serializable, Comparable). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Signed-off-by: Andrea Cosentino <ancosen@gmail.com>
davsclaus
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Jun 23, 2026
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Backport of #24195 to
camel-4.14.x.camel-jackson-avro's andcamel-jackson-protobuf'screateNewObjectMapper()now build their defaultAvroMapper/ProtobufMapperwithMapperFeature.BLOCK_UNSAFE_POLYMORPHIC_BASE_TYPESenabled, mirroring the hardening applied tocamel-jackson(CAMEL-23786) andcamel-jacksonxml(CAMEL-23787) and to their respectivetransform/mappers. Defense-in-depth against gadget-chain deserialization; ordinary marshalling/unmarshalling is unchanged. Opt out via theobjectMapperoption.Code + test only — the upgrade-guide entry lives on
main(per the docs-on-main policy).AI-generated by Claude Code on behalf of Andrea Cosentino.