CVE-2026-18203 in Keycloak
Resumen
por MITRE • 2026-07-31
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.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.