{"id":"CVE-2026-54518","aliases":["GHSA-rcqc-6cw3-h962"],"url":"https://o3.security/vulnerability/CVE-2026-54518","summary":"jackson-databind: @JsonView bypass for unwrapped creator parameters in jackson-databind","details":"## Summary\n`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.\n\n## Impact\nView-restricted unwrapped creator parameters can be set from untrusted input where `@JsonView` is used as a write-side authorization boundary.\n\n## Affected / Patched (verified via `git tag --contains`)\n- 2.21 line: `>= 2.21.0, < 2.21.4` -> fixed in **2.21.4** (backport `721fa07`, #5973)\n- 3.x line: `>= 3.0.0, < 3.1.4` -> fixed in **3.1.4** (#5971, `d633bc0`)\n\n## Severity / CWE\nMaintainer: minor. Reporter: HIGH. CWE-863 (Incorrect Authorization); related CWE-284.\n\n## Credits\nOmkhar Arasaratnam (@omkhar) - finder.","published":"2026-06-23T21:02:07.539Z","modified":"2026-10-28T11:09:55.065039735Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},"epss":{"score":0.00354,"percentile":0.28797,"asOf":"2026-09-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"com.fasterxml.jackson.core:jackson-databind","fixedVersion":"2.21.4"},{"ecosystem":"Maven","name":"tools.jackson.core:jackson-databind","fixedVersion":"3.1.4"}],"fix":{"url":"https://github.com/FasterXML/jackson-databind/commit/721fa07ebbd4aab4a659a1a68940878315c3e341","label":"FasterXML/jackson-databind@721fa07"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54518.json"},{"type":"ADVISORY","url":"https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rcqc-6cw3-h962"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54518"},{"type":"FIX","url":"https://github.com/FasterXML/jackson-databind/commit/721fa07ebbd4aab4a659a1a68940878315c3e341"},{"type":"FIX","url":"https://github.com/FasterXML/jackson-databind/commit/d633bc038f200c1397c07f1a2b46f58e72c91eea"},{"type":"FIX","url":"https://github.com/FasterXML/jackson-databind/pull/5971"},{"type":"FIX","url":"https://github.com/FasterXML/jackson-databind/pull/5973"},{"type":"PACKAGE","url":"https://github.com/FasterXML/jackson-databind"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T11:09:55.065039735Z"}}