CVE-2024-11734: Red Hat Build Of Keycloak

Medium severity, CVSS 6.5. EPSS: 1% chance of exploitation in the next 30 days.

A denial of service vulnerability was found in Keycloak that could allow an administrative user with the right to change realm settings to disrupt the service. This action is done by modifying any of the security headers and inserting newlines, which causes the Keycloak server to write to a request that has already been terminated, leading to the failure of said request.

Affected products

• Red Hat Red Hat Build Of Keycloak
• Red Hat Red Hat Build Of Keycloak 26.0: before 26.0.8-1 (fixed in 26.0.8-1); before 26.0-7 (fixed in 26.0-7); before 26.0-8 (fixed in 26.0-8)
• Red Hat Red Hat JBoss Enterprise Application Platform 8
• Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
• Red Hat Rhbk 26.0.8

Published 2025-01-14. Last modified 2026-08-31.