CVE-2026-15945: Red Hat Build Of Keycloak

Low severity, CVSS 2.7. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in the group search functionality of the Keycloak server's administrative API. When Fine-Grained Admin Permissions (FGAP) v2 is enabled, a delegated administrator can bypass access restrictions to view parent groups they are not authorized to see. By searching for a child group they have permission to view, the system incorrectly returns the full details of the parent group in the response, leading to the disclosure of sensitive group attributes and configuration.

Affected products

• Red Hat Build Of Keycloak: affected versions not specified
• Red Hat Data Grid: version 8.0 only
• Red Hat JBoss Enterprise Application Platform Expansion Pack: affected versions not specified
• Red Hat Single Sign-On: version 7.0 only

Published 2026-07-16. Last modified 2026-09-16.