Auth bypass in Red Hat Build Of Keycloak
CVE-2026-9099
A flaw was found in Keycloak. A missing authorization check in the GroupResource.addChild() endpoint within the Admin REST API allows an authenticated user with limited administrative privileges to reparent any existing group. When Fine-Gr…
Vulnerability class: IDOR (Insecure Direct Object Reference)
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N.
Affected products
- Red Hat Build Of Keycloak
- Red Hat Build Of Keycloak 26.6 — versions 26.6-8, 26.6.4-2
- Red Hat Build Of Keycloak 26.6.4
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2026-9099?
- CVE-2026-9099 is a high-severity vulnerability in Red Hat Build Of Keycloak, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.7/10. Published 2026-06-25.
- How severe is CVE-2026-9099?
- High severity. CVSS v3 base score is 7.7 out of 10.