PT-2026-66721 · Red Hat · Red Hat Build Of Keycloak+3

CVE-2026-16105 · Published 2026-07-31 · Updated 2026-07-31

Mitre

CVSS v3.1

4.9

Medium

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

A flaw was found in the RoleContainerResource component of Keycloak. The issue occurs because certain name-based endpoints in the admin REST API do not properly enforce authorization checks when managing composite roles. This allows a delegated administrator with manage-realm permissions to remove essential child roles from built-in admin roles, potentially disrupting administrative functions within a realm.

Fix

Related Identifiers

CVE-2026-16105

Affected Products

Red Hat Build Of Keycloak

Red Hat Data Grid 8

Red Hat Jboss Enterprise Application Platform Expansion Pack

Red Hat Single Sign-On 7

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-16105 · Security Note
• https://access.redhat.com/security/cve/CVE-2026-16105 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2501738 · Note