CVE-2026-3190 — MEDIUM (4.3)

Vulnerability Description

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.

CVSS Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Redhat	Build Of Keycloak	-

Related Weaknesses (CWE)

CWE-280

References

https://access.redhat.com/errata/RHSA-2026:6477
https://access.redhat.com/errata/RHSA-2026:6478
https://access.redhat.com/security/cve/CVE-2026-3190Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2442572Issue TrackingVendor Advisory

FAQ

What is CVE-2026-3190?

CVE-2026-3190 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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...

How severe is CVE-2026-3190?

CVE-2026-3190 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-3190?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Build Of Keycloak.