Information Disclosure

Keycloak is vulnerable to information disclosure. The vulnerability is due to insufficient authorization checks in the default-groups REST endpoint and realm representation, which allows a delegated administrator with realm-viewing permissions to access the names and identifiers of hidden default...

CVE-2026-16108: Insufficient Granularity of Access Control

A flaw was found in the default-groups REST endpoint and realm representation of Keycloak. This component is responsible for managing groups that are automatically assigned to new users within a realm. The issue allows a delegated administrator with realm-viewing permissions to see the names and...