CVE-2026-54516
mediumpriority · track · 0EPSS 0.004 · 39 %ileDEEUFRUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (11)
Products and version ranges known to be affected.
- Maven com.fasterxml.jackson.core:jackson-databind2.21.0 → 2.21.4osvUSpkg:maven/com.fasterxml.jackson.core/jackson-databind
- Maven com.fasterxml.jackson.core:jackson-databind3.0.0 → 3.1.4osvUSpkg:maven/com.fasterxml.jackson.core/jackson-databind
- Maven tools.jackson.core:jackson-databind3.0.0 → 3.1.4osvUSpkg:maven/tools.jackson.core/jackson-databind
advisories (5)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2058FasterXML Jackson: Mehrere SchwachstellenDeutsch2026-06-23csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in FasterXML Jackson ausnutzen, um Schutzmechanismen und Autorisierungsregeln zu umgehen, Daten zu manipulieren, Informationen offenzulegen oder einen Denial-of-Service zu verursachen.
- WID-SEC-W-2026-2867RealObjects PDFreactor: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2026-08-16csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in RealObjects PDFreactor ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
- GHSA-9fxm-vc8v-hj55jackson-databind's renamed @JsonIgnore'd setters can deserialize via private fields2026-06-23ghsa · osvUS
## Summary `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. ## Impact POJOs combining a renamed getter with an ignored setter (a read-only-over-the-wire pattern) have that field silently set from attacker input (property tampering / mass assignment). Not a general gadget; no RCE. ## Affected / Patched (verified via `git tag --contains`) - 2.21 line: `>= 2.21.0, < 2.21.4` -> fixed in **2.21.4** (backport `c3d56dd`, #5968) - 3.x line: `>= 3.0.0, < 3.1.4` -> fixed in **3.1.4** (#5967, `e88cb17`) ## Severity / CWE Maintainer: minor. Reporter: HIGH. CWE-915. ## Credits Omkhar Arasaratnam (@omkhar) - finder.
- CERTFR-2026-AVI-1336Multiples vulnérabilités dans les produits IBMFrançais2026-10-16vendor · certfrFR
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
also known as (3)
Other names and identifiers for this entity.
sources
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references (15)
External citations — patches, advisories, analysis.
- https://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250acnnvd
- https://github.com/FasterXML/jackson-databind/commit/e88cb17006b6af4883b973058f0bb6486e5074afcnnvd
- https://github.com/FasterXML/jackson-databind/pull/5967cnnvd
- https://github.com/FasterXML/jackson-databind/pull/5968cnnvd
- https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-9fxm-vc8v-hj55cnnvd
- https://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250aenisa_euvd
- https://github.com/FasterXML/jackson-databind/commit/e88cb17006b6af4883b973058f0bb6486e5074afenisa_euvd
- https://github.com/FasterXML/jackson-databind/pull/5967enisa_euvd
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