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, UnwrappedPropertyHandler.processUnwrappedCreatorProperties() replays buffered JSON into creator parameters but never consults prop.visibleInView(activeView). The normal property-based creator path gates creator properties on the active view, but this unwrapped-creator replay path bypasses that check, so a constructor parameter annotated with both @JsonView(AdminView.class) and @JsonUnwrapped is populated from attacker JSON even when a more restrictive view is active. This vulnerability is fixed in 2.21.4 and 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/721fa07ebbd4aab4a659a1a6894Patch
- https://github.com/FasterXML/jackson-databind/commit/d633bc038f200c1397c07f1a2b4Patch
- https://github.com/FasterXML/jackson-databind/pull/5971Issue Tracking
- https://github.com/FasterXML/jackson-databind/pull/5973Issue Tracking
- https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rcqc-6cw3Vendor Advisory
FAQ
What is CVE-2026-54518?
CVE-2026-54518 is a vulnerability with a CVSS score of 6.5 (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, UnwrappedPropertyHandler.processUnwrappedCreator...
How severe is CVE-2026-54518?
CVE-2026-54518 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54518?
Check the references section above for vendor advisories and patch information. Affected products include: Fasterxml Jackson-Databind.