A flaw was found in the Admin REST API of Keycloak, an open-source identity and access management solution. The issue occurs in the group-membership endpoints where the system fails to check if a group grants administrative privileges before allowing a user to be added. This allows a delegated administrator with limited permissions to add themselves to a high-privilege group, potentially gaining full control over the entire realm.

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Fixes

Solution

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Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

History

Mon, 21 Sep 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat build Of Keycloak
Redhat single Sign-on
Vendors & Products Redhat build Of Keycloak
Redhat single Sign-on

Mon, 21 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sun, 20 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Sat, 19 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in the Admin REST API of Keycloak, an open-source identity and access management solution. The issue occurs in the group-membership endpoints where the system fails to check if a group grants administrative privileges before allowing a user to be added. This allows a delegated administrator with limited permissions to add themselves to a high-privilege group, potentially gaining full control over the entire realm.
Title Keycloak-services: keycloak-services: delegated admin with manage-users can escalate to realm-admin via group membership
First Time appeared Redhat
Redhat build Keycloak
Redhat red Hat Single Sign On
Weaknesses CWE-862
CPEs cpe:/a:redhat:build_keycloak:
cpe:/a:redhat:red_hat_single_sign_on:7
Vendors & Products Redhat
Redhat build Keycloak
Redhat red Hat Single Sign On
References
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-21T15:22:39.327Z

Reserved: 2026-09-19T14:03:20.198Z

Link: CVE-2026-94000

cve-icon Vulnrichment

Updated: 2026-09-21T15:22:18.983Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-19T15:17:08.763

Modified: 2026-09-22T19:37:36.747

Link: CVE-2026-94000

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-18T00:25:25Z

Links: CVE-2026-94000 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-21T19:00:08Z

Weaknesses