CVE-2026-14613: Keycloak-services: keycloak-services: keycloak: fgap v2 role groups endpoint discloses hidden group metadata without group view permission
A flaw was found in Keycloak's Fine-Grained Admin Permissions v2 (FGAP v2) implementation. When FGAP v2 is enabled, the role groups endpoints (GET /admin/realms/{realm}/clients/{clientUuid}/roles/{roleName}/groups and GET /admin/realms/{realm}/roles/{roleName}/groups) fail to correctly enforce per-group view permissions. The RoleContainerResource.getGroupsInRole() method only verifies that the caller has permission to view the role itself (auth.roles().requireView(roleContainer)). It then returns representations for all groups mapped to that role without verifying if the caller has permission to view each individual group (auth.groups().canView(group)). This allows a delegated administrator with role view access to enumerate hidden groups and retrieve their metadata, including names, paths, and custom attributes, even if direct access to those groups is correctly denied with a 403 Forbidden error.
Other sources
A vulnerability was discovered in Keycloak's administrative interface that allows certain administrators to see information about groups they shouldn't have access to. When the new Fine-Grained Admin Permissions (FGAP v2) are turned on, an administrator who is allowed to see a specific "role" can also see a list of all groups assigned to that role. The system fails to check if the administrator has permission to see those specific groups. This could allow a restricted administrator to discover "hidden" groups and see their details, such as internal names and custom settings, which might contain sensitive deployment information.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-14613?
The severity of CVE-2026-14613 is medium with a score of 4.3.
What does CVE-2026-14613 involve?
CVE-2026-14613 involves Keycloak's keycloak-services where certain administrators can access hidden group metadata without the necessary permissions.
How can I mitigate CVE-2026-14613?
To mitigate CVE-2026-14613, ensure that Fine-Grained Admin Permissions (FGAP v2) are properly configured to restrict access to role groups.
Who is affected by CVE-2026-14613?
CVE-2026-14613 affects Keycloak installations that have Fine-Grained Admin Permissions (FGAP v2) enabled.
Is there a patch available for CVE-2026-14613?
Currently, there is no specific patch noted for CVE-2026-14613, so users should stay updated with Keycloak security advisories for fixes.