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CVE-2026-4629

6.5 medium SSVC exploitation: none Modified
NVD · CVE.org

A flaw was found in Keycloak. A highly privileged user with `manage-clients` permission can exploit this vulnerability by injecting a hardcoded role mapper into any client. This action allows the user to bypass existing scope restrictions and inject the `realm-admin` role into generated tokens, resulting in privilege escalation and full administrative access to the realm.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.5 · redhatNVD modified 2026-10-22 21:17

Affected (CPE criteria) 1

  • cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:*:*:*:*

References 5