CVE-2026-54518: jackson-databind has a @JsonView bypass for unwrapped creator parameters
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
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