Medium severity4.9NVD Advisory· Published Jul 31, 2026· Updated Sep 16, 2026
CVE-2026-16105
CVE-2026-16105
Description
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.
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Affected products
4- cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:*
Patches
Vulnerability mechanics
References
4- access.redhat.com/security/cve/CVE-2026-16105nvdVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
- access.redhat.com/errata/RHSA-2026:68277nvd
- access.redhat.com/errata/RHSA-2026:68278nvd
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