What’s Vulnerable › Vulnerabilities

CVE-2026-3121: Keycloak: org.keycloak/keycloak-services: keycloak: privilege escalation via manage-clients permission

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-26 · updated 2026-06-17
• Weakness: CWE-266

Description

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.

Affected products

• Red Hat build of Keycloak 26.4: all versions
• Red Hat JBoss EAP: 8.0.0
• RedHat Jboss Enterprise Application Platform Expansion Pack: all versions
• Red Hat Single Sign-On: 7.0

References

• https://access.redhat.com/errata/RHSA-2026:6477
• https://access.redhat.com/errata/RHSA-2026:6478
• https://access.redhat.com/security/cve/CVE-2026-3121
• https://bugzilla.redhat.com/show_bug.cgi?id=2442277

Get alerted when CVE-2026-3121 or the next vulnerability affects your stack