jackson-databind has @JsonView bypass for setterless creator properties
Summary
In BeanDeserializer._deserializeUsingPropertyBased, the active-view (@JsonView) filter was applied only to creator properties; the regular property-buffering branch performed no prop.visibleInView(activeView) check. A change making SetterlessProperty.isMerging() return true routed setterless Collection/Map properties through this unguarded path, so a setterless collection annotated with a restricted @JsonView is populated from attacker JSON even when the active view excludes it.
Impact
View-restricted (e.g. admin-only) setterless collection/map properties can be written from untrusted JSON despite @JsonView gating — an access-control / mass-assignment bypass. No RCE or DoS.
Affected / Patched (verified via git tag --contains)
- 2.21 line:
>= 2.21.0, < 2.21.4-> fixed in 2.21.4 (backport94c5d21, #5970) - 3.x line:
>= 3.0.0, < 3.1.4-> fixed in 3.1.4 (#5969,5bf23ed)
Severity / CWE
Maintainer: minor. Reporter: HIGH. CWE-863 (Incorrect Authorization); related CWE-1220.
Credits
Omkhar Arasaratnam (@omkhar) - finder.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | com.fasterxml.jackson.core:jackson-databind | >= 2.21.0, < 2.21.4, >= 3.0.0, < 3.1.4 | 2.21.4, 3.1.4 |
| 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-5hh8-q8hv-fr38
- https://nvd.nist.gov/vuln/detail/CVE-2026-54517
- https://github.com/FasterXML/jackson-databind/pull/5969
- https://github.com/FasterXML/jackson-databind/pull/5970
- https://github.com/FasterXML/jackson-databind/commit/5bf23edb4221f7dd2ec8e71ff6d26c61640f261d
- https://github.com/FasterXML/jackson-databind/commit/94c5d215b3af1505098c686405d9641f041a9962
- https://github.com/FasterXML/jackson-databind
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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-5hh8-q8hv-fr38 - 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
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