medium6.5
CVE-2026-3121
Keycloak: manage-clients permission escalates to full realm admin access
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-services | < 26.5.6 | 26.5.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Redhat | Build Of Keycloak | All versions |
| Redhat | Jboss Enterprise Application Platform | Version 8.0.0 |
| Redhat | Jboss Enterprise Application Platform Expansion Pack | All versions |
| Redhat | Single Sign-On | Version 7.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-7xf9-4jfc-wgm4
- https://nvd.nist.gov/vuln/detail/CVE-2026-3121
- https://access.redhat.com/security/cve/CVE-2026-3121
- https://bugzilla.redhat.com/show_bug.cgi?id=2442277
- https://github.com/keycloak/keycloak/issues/46719
- https://github.com/keycloak/keycloak/commit/79ab3110a257fb8d6f1a664c916687128094ed01
- https://access.redhat.com/errata/RHSA-2026:6477
- https://access.redhat.com/errata/RHSA-2026:6478