CVE-2026-19608 Keycloak-services: keycloak-services: name-only group claims let same-name groups satisfy path-specific group policies
Attackers can gain unauthorized access to protected resources by exploiting group name collisions in Keycloak's authorization policies.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19608?
CVE-2026-19608 is a medium-severity missing authorization vulnerability in Red Hat Build of Keycloak, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw was found in the group policy provider of Keycloak authorization services, which is used to manage fine-grained access control to resources. The issue occurs when the system evaluates group-based policies using tokens that only contain group names rather than full paths. If two groups in different parts of the organization share the same name, a user in the unauthorized group can be mistaken for a member of the authorized group. This can allow a user to gain unauthorized access to protected resources they should not be able to reach.
Weakness: CWE-285
Which versions are affected by CVE-2026-19608?
How do I fix CVE-2026-19608?
No fix has been published for CVE-2026-19608 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-19608 being exploited?
There is no known exploitation of CVE-2026-19608 in the wild and no public exploit code.
Sources
Also known as GHSA-qxf7-g44v-fgwh.