jackson-databind has a @JsonView bypass for unwrapped creator parameters
Summary
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.
Impact
View-restricted unwrapped creator parameters can be set from untrusted input where @JsonView is used as a write-side authorization boundary.
Affected / Patched (verified via git tag --contains)
- 2.21 line:
>= 2.21.0, < 2.21.4-> fixed in 2.21.4 (backport721fa07, #5973) - 3.x line:
>= 3.0.0, < 3.1.4-> fixed in 3.1.4 (#5971,d633bc0)
Severity / CWE
Maintainer: minor. Reporter: HIGH. CWE-863 (Incorrect Authorization); related CWE-284.
Credits
Omkhar Arasaratnam (@omkhar) - finder.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | com.fasterxml.jackson.core:jackson-databind | >= 2.21.0, < 2.21.4 | 2.21.4 |
| Java / Kotlin (Maven) | tools.jackson.core:jackson-databind | >= 3.0.0, < 3.1.4 | 3.1.4 |
References
- https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rcqc-6cw3-h962
- https://nvd.nist.gov/vuln/detail/CVE-2026-54518
- https://github.com/FasterXML/jackson-databind/pull/5971
- https://github.com/FasterXML/jackson-databind/pull/5973
- https://github.com/FasterXML/jackson-databind/commit/721fa07ebbd4aab4a659a1a68940878315c3e341
- https://github.com/FasterXML/jackson-databind/commit/d633bc038f200c1397c07f1a2b46f58e72c91eea
- https://github.com/FasterXML/jackson-databind
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-863- Platform
- Java / Kotlin (Maven)
- Package
com.fasterxml.jackson.core:jackson-databind, tools.jackson.core:jackson-databind- Disclosed
- 23.06.2026
- Updated
- 11.10.2026 13:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-rcqc-6cw3-h962 - CC BY 4.0
Vulnerability history: tools.jackson.core:jackson-databind
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 15
- First → latest
- 06.2026 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 5
- Medium 10
Disclosures per year
- 2026: 15
-
jackson-databind has a @JsonView bypass for unwrapped creator parameters this entry
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