CVE-2026-3047: Red Hat Build Of Keycloak

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language (SAML) client is configured as an Identity Provider (IdP)-initiated broker landing target, it can still complete the login process and establish a Single Sign-On (SSO) session. This allows a remote attacker to gain unauthorized access to other enabled clients without re-authentication, effectively bypassing security restrictions.

Affected products

• Red Hat Build Of Keycloak: affected versions not specified; version 26.2 only; version 26.2.14 only; version 26.4 only; version 26.4.10 only
• Red Hat Keycloak: affected versions not specified

Published 2026-03-05. Last modified 2026-07-15.