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Medium severityNVD Advisory· Published Jun 23, 2026

jackson-databind has a @JsonView bypass for unwrapped creator parameters

CVE-2026-54518

Description

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 (backport 721fa07, #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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
com.fasterxml.jackson.core:jackson-databindMaven
>= 2.21.0, < 2.21.42.21.4
tools.jackson.core:jackson-databindMaven
>= 3.0.0, < 3.1.43.1.4

Affected products

2

Patches

Vulnerability mechanics

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References

6

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