Keycloak Priv Escalation via Misconfigured manage-clients as manage-permissions
CVE-2026-3121 Published on March 26, 2026
Keycloak: org.keycloak/keycloak-services: keycloak: privilege escalation via manage-clients permission
A flaw was found in Keycloak. An administrator with `manage-clients` permission can exploit a misconfiguration where this permission is equivalent to `manage-permissions`. This allows the administrator to escalate privileges and gain control over roles, users, or other administrative functions within the realm. This privilege escalation can occur when admin permissions are enabled at the realm level.
Vulnerability Analysis
CVE-2026-3121 can be exploited with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
Incorrect Privilege Assignment
A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.
Products Associated with CVE-2026-3121
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Affected Versions
Red Hat build of Keycloak 26.4:- Version 26.4.11-1 and below * is unaffected.
- Version 26.4-14 and below * is unaffected.
- Version 26.4-14 and below * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.