Improper Authorization

Keycloak is vulnerable to Improper Authorization. The vulnerability is due to flawed group policy evaluation using a text-based prefix check for group membership, which allows a user belonging to a similarly named but unauthorized group to bypass access controls and gain unauthorized access to...

CVE-2026-18203: Incorrect Authorization

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 ...

Unable to reconnect to disconnected session.

Attempts to reconnect to a session might fail and the session might disappear from Citrix Director. A new session is launched instead of reconnecting to the existing session. To enable the fix, set the following registry key: Session Manager terminates session launches when the Group Policy...