Description
A flaw was found in Keycloak's Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client management permissions can exploit this vulnerability to assign any realm role, including highly privileged roles, to a client's scope mapping. This bypasses intended security controls, allowing the injected role to be projected into a user's authentication token when they access the modified client. This could lead to unauthorized privilege escalation within the Keycloak realm.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat build of Keycloak 26.4
Default version status: affected
26.4.13-1 to < *unaffected
Red Hat Red Hat build of Keycloak 26.4
Default version status: affected
26.4-19 to < *unaffected
Red Hat Red Hat build of Keycloak 26.4
Default version status: affected
26.4-19 to < *unaffected
Red Hat Red Hat build of Keycloak 26.4.13
Default version status: unaffected
Red Hat Red Hat build of Keycloak 26.6
Default version status: affected
26.6.4-2 to < *unaffected
Red Hat Red Hat build of Keycloak 26.6
Default version status: affected
26.6-8 to < *unaffected
Red Hat Red Hat build of Keycloak 26.6
Default version status: affected
26.6-8 to < *unaffected
Red Hat Red Hat build of Keycloak 26.6.4
Default version status: unaffected
References
- https://access.redhat.com/errata/RHSA-2026:30049 ↗
- https://access.redhat.com/errata/RHSA-2026:30050 ↗
- https://access.redhat.com/errata/RHSA-2026:30083 ↗
- https://access.redhat.com/errata/RHSA-2026:30084 ↗
- https://access.redhat.com/security/cve/CVE-2026-9795 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2482462 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9795.json ↗