CVE-2026-2366: Red Hat Build Of Keycloak

Low severity, CVSS 3.1. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.

Affected products

• Red Hat Build Of Keycloak: from 26.4, before 26.4.11 (fixed in 26.4.11)

Published 2026-03-12. Last modified 2026-08-18.