CVE-2026-54518: jackson-databind has a @JsonView bypass for unwrapped creator parameters
(updated )
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.
References
- github.com/FasterXML/jackson-databind/commit/721fa07ebbd4aab4a659a1a68940878315c3e341
- github.com/FasterXML/jackson-databind/commit/d633bc038f200c1397c07f1a2b46f58e72c91eea
- github.com/FasterXML/jackson-databind/pull/5971
- github.com/FasterXML/jackson-databind/pull/5973
- github.com/FasterXML/jackson-databind/security/advisories/GHSA-rcqc-6cw3-h962
- github.com/advisories/GHSA-rcqc-6cw3-h962
- nvd.nist.gov/vuln/detail/CVE-2026-54518
Code Behaviors & Features
Detect and mitigate CVE-2026-54518 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →