Improper Access Control Affecting keycloak-fips-26.5 package, versions <26.5.6-r4


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.27% (17th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-KEYCLOAKFIPS265-15951966
  • published9 Apr 2026
  • disclosed23 Mar 2026

Introduced: 23 Mar 2026

CVE-2026-4628  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade Chainguard keycloak-fips-26.5 to version 26.5.6-r4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream keycloak-fips-26.5 package and not the keycloak-fips-26.5 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

A flaw was found in Keycloak. An improper Access Control vulnerability in Keycloak’s User-Managed Access (UMA) resource_set endpoint allows attackers with valid credentials to bypass the allowRemoteResourceManagement=false restriction. This occurs due to incomplete enforcement of access control checks on PUT operations to the resource_set endpoint. This issue enables unauthorized modification of protected resources, impacting data integrity.

CVSS Base Scores

version 3.1