ZDF
Sign inSign up

Vulnerabilities

Security fix · CVE-2026-54518

@JsonView bypass for unwrapped creator parameters in jackson-databind

Published Jun 16, 2026 · catalog updated Jun 18, 2026 · @JsonView bypass for unwrapped

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-54518. EPSS is 0.35%. Act only if a listed version of @JsonView bypass for unwrapped is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (@JsonView bypass for unwrapped).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.35%
Remediation
Version ranges on file
Affected products
maven com.fasterxml.jackson.core:jackson-databind · maven tools.jackson.core:jackson-databind

## Summary replays buffered JSON into creator parameters but never consults . 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 and 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 is used as a write-side authorization boundary. ## Affected / Patched (verified via ) - 2.21 line: -> fixed in **2.21.4** (backport , #5973) - 3.x line: -> fixed in **3.1.4** (#5971, ) ## Severity / CWE Maintainer: minor. Reporter: HIGH. CWE-863 (Incorrect Authorization); related CWE-284. ## Credits Omkhar Arasaratnam (@omkhar) - finder.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • maven com.fasterxml.jackson.core:jackson-databind>= 2.21.0, < 2.21.4
  • maven tools.jackson.core:jackson-databind>= 3.0.0, < 3.1.4

How to fix CVE-2026-54518

  • Upgrade

    CVE-2026-54518 lists a fix boundary at 2.21.4. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 2.21.4

  • Advisory

    Open the inventory_github record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-54518. EPSS is 0.35%. Act only if a listed version of @JsonView bypass for unwrapped is installed.

Which versions are affected?

Compare what you have installed with >= 2.21.0, < 2.21.4, >= 3.0.0, < 3.1.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-863: Incorrect Authorization. EPSS 0.35%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Jackson security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 16, 2026 · Maintainer security tabs

    Detected

    ## Summary replays buffered JSON into creator parameters but never consults . 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 and is populated from attacker JSON even when a more restrictive view is active. ## Impact View-restricted unwrapped creator parame

  2. Jun 18, 2026 · Maintainer security tabs

    Updated

    ## Summary replays buffered JSON into creator parameters but never consults . 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 and is populated from attacker JSON even when a more restrictive view is active. ## Impact View-restricted unwrapped creator parame

Sources

  • Maintainer security tabsVendor advisoryGHSA-rcqc-6cw3-h962

    ## Summary replays buffered JSON into creator parameters but never consults . 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 and is populated from attacker JSON even when a more restrictive view is active. ## Impact View-restricted unwrapped creator parame

    github.com

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Maintainer security tabsNov 2, 2026