Description
A flaw was found in the group policy evaluation logic of Keycloak, an identity and access management solution. When a group policy is set to extend permissions to child groups, the system incorrectly uses a simple text-based prefix check to verify group membership. This allows a user who belongs to a different group with a similar starting name to bypass security checks and gain unauthorized access to administrative functions or protected resources.
Metrics
CVSS 3.1 6.5/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.6 | — |
| Red Hat | Red Hat build of Keycloak 26.6 | — |
| Red Hat | Red Hat build of Keycloak 26.6 | — |
| Red Hat | Red Hat build of Keycloak 26.6.8 | — |
| Red Hat | Red Hat build of Keycloak 26.6.8 | — |
| Red Hat | Red Hat build of Keycloak 26.6.8 | — |
| Red Hat | Red Hat Data Grid 8 | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | — |
| Red Hat | Red Hat Single Sign-On 7 | — |
References
Timeline
- Published
- Jul 31, 2026
- Last modified
- Nov 6, 2026
- NVD status
- Modified