CVE-2026-54516

Name	CVE-2026-54516
Description	jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.21.0 until 2.21.4 and 3.1.4, POJOPropertiesCollector._renameProperties() allows a property with @JsonProperty("renamed") on the getter and @JsonIgnore on the setter to be renamed rather than dropped. With MapperFeature.INFER_PROPERTY_MUTATORS enabled (default), the private backing field is retained; during deserialization BeanDeserializerFactory.addBeanProps() sees hasField()==true, builds a FieldProperty, and makes the backing field writable. An attacker supplying the renamed JSON key writes the backing field directly, bypassing the @JsonIgnore on the setter. This vulnerability is fixed in 3.1.4.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
jackson-databind (PTS)	bullseye	2.12.1-1+deb11u1	vulnerable
	bullseye (security)	2.12.1-1+deb11u2	vulnerable
	bookworm	2.14.0-1	vulnerable
	bookworm (security)	2.14.0-1+deb12u1	vulnerable
	trixie	2.14.0+ds-1	vulnerable
	trixie (security)	2.14.0+ds-1+deb13u1	vulnerable
	forky, sid	2.14.0+ds-2	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
jackson-databind	source	(unstable)	(unfixed)

Notes

https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-9fxm-vc8v-hj55
https://github.com/FasterXML/jackson-databind/pull/5967
https://github.com/FasterXML/jackson-databind/pull/5968
https://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250a (jackson-databind-2.21.4)
https://github.com/FasterXML/jackson-databind/commit/e88cb17006b6af4883b973058f0bb6486e5074af (jackson-databind-3.1.4)