Description
Keycloak is an open-source identity and access management solution. A vulnerability was discovered where a user with the impersonation role can impersonate a realm administrator. This allows the attacker to gain full administrative control over the realm, including the ability to manage users, clients, and roles.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 | — | — |
| Red Hat | Red Hat build of Keycloak 26.4.16 | — | — |
| Red Hat | Red Hat build of Keycloak 26.6 | — | — |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — | — |
| 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 | — | — |
Advisories 1
- WID-SEC-2026-3418 Keycloak: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
References
- RHSA-2026:68276 vendor-advisory
- RHSA-2026:68277 vendor-advisory
- RHSA-2026:68278 vendor-advisory
- RHSA-2026:68280 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-17526 vdb-entry
- RHBZ#2507409 issue-tracking