CVE-2026-54516jackson-databind: Renamed @JsonIgnore'd setters can deserialize via private fields
- 5.3MediumCVSS base score
- 0.45%Exploitation in 30 daysEPSS · top 60% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By GitHub_M
- 8 days later
· 8 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVDNVD · Analyzed | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.45% · top 60% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
- affected >= 2.21.0, < 2.21.4
- affected >= 3.0.0, < 3.1.4
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavencom.fasterxml.jackson.core:jackson-databindGHSA-9fxm-vc8v-hj55 (opens in a new tab)
- Maventools.jackson.core:jackson-databindGHSA-9fxm-vc8v-hj55 (opens in a new tab)
References
References5
- https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-9fxm-vc8v-hj55 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/FasterXML/jackson-databind/pull/5967 (opens in a new tab)x_refsource_MISC
- https://github.com/FasterXML/jackson-databind/pull/5968 (opens in a new tab)x_refsource_MISC
- https://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250a (opens in a new tab)x_refsource_MISC
- https://github.com/FasterXML/jackson-databind/commit/e88cb17006b6af4883b973058f0bb6486e5074af (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-38590 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9fxm-vc8v-hj55 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-54516)Record last updated .