Keycloak UMA Permission Ticket Enum - CVE-2026-3190
CVE-2026-3190 Published on March 26, 2026
Keycloak: keycloak: information disclosure via improper role enforcement in uma 2.0 protection api
A flaw was found in Keycloak. The User-Managed Access (UMA) 2.0 Protection API endpoint for permission tickets fails to enforce the `uma_protection` role check. This allows any authenticated user with a token issued for a resource server client, even without the `uma_protection` role, to enumerate all permission tickets in the system. This vulnerability partial leads to information disclosure.
Vulnerability Analysis
CVE-2026-3190 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
Improper Handling of Insufficient Permissions or Privileges
The application does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. This may cause it to follow unexpected code paths that may leave the application in an invalid state.
Products Associated with CVE-2026-3190
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Affected Versions
Red Hat build of Keycloak 26.4:- Version 26.4.11-1 and below * is unaffected.
- Version 26.4-14 and below * is unaffected.
- Version 26.4-14 and below * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.