Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Fasterxml | Jackson-Databind | >= 2.21.0, < 2.21.4 |
Related Weaknesses (CWE)
References
- https://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aePatch
- https://github.com/FasterXML/jackson-databind/commit/e88cb17006b6af4883b973058f0Patch
- https://github.com/FasterXML/jackson-databind/pull/5967Issue TrackingPatch
- https://github.com/FasterXML/jackson-databind/pull/5968Issue TrackingPatch
- https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-9fxm-vc8vVendor Advisory
FAQ
What is CVE-2026-54516?
CVE-2026-54516 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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() allo...
How severe is CVE-2026-54516?
CVE-2026-54516 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54516?
Check the references section above for vendor advisories and patch information. Affected products include: Fasterxml Jackson-Databind.