CVE-2026-94000

Received Received - Intake

Privilege Escalation in Keycloak Admin REST API

Publication date: 2026-09-19

Last updated on: 2026-09-19

Assigner: redhat-SADP

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-19

Last Modified

2026-09-19

Generated

2026-09-20

AI Q&A

2026-09-20

EPSS Evaluated

N/A

NVD

CVE-2026-94000

Affected Vendors & Products

Vendor	Product	Version / Range
keycloak	keycloak	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability is in Keycloak's Admin REST API, specifically in group-membership endpoints. It allows a delegated admin with limited permissions to add themselves to a high-privilege group without proper checks, potentially gaining full control over the entire realm.

Impact Analysis

An attacker with limited admin access could escalate privileges to gain full control over the Keycloak realm, compromising all user accounts, permissions, and sensitive data managed by the system.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating compliance requirements such as GDPR (data protection) and HIPAA (health information privacy), potentially resulting in legal penalties and reputational damage.

Mitigation Strategies

Update Keycloak to the latest version that patches this flaw. Review group memberships in the Admin REST API to ensure no unauthorized users have administrative privileges. Restrict access to the Admin REST API endpoints.

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