CVE-2025-13881: Red Hat Build Of Keycloak 26.4

Low severity, CVSS 2.7. EPSS: 0.4% chance of exploitation in the next 30 days.

A flaw was found in Keycloak Admin API. This vulnerability allows an administrator with limited privileges to retrieve sensitive custom attributes via the /unmanagedAttributes endpoint, bypassing User Profile visibility settings.

Affected products

• Red Hat Red Hat Build Of Keycloak 26.4: before 26.4.9-1 (fixed in 26.4.9-1); before 26.4-11 (fixed in 26.4-11); before 26.4-10 (fixed in 26.4-10)
• Red Hat Red Hat Build Of Keycloak 26.4.9

Published 2026-02-02. Last modified 2026-06-17.