CVE-2026-16105: Vulnerability in Red Hat Red Hat Build of Keycloak
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.
CVE-2026-16105: Vulnerability in Red Hat Red Hat Build of Keycloak
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.
CVSS v3.1
Score 4.9medium
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-07-17T14:50:31.309Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-16105","vendor":"Red Hat"}]
Threat ID: 6a6c50cf9c2644c7f87f985d
Added to database: 07/31/2026, 07:37:51 UTC
Last updated: 07/31/2026, 11:46:07 UTC
Views: 5
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