Incorrect authorization in Keycloak - CVE-2026-3190

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU148932

Incorrect authorization in Keycloak - CVE-2026-3190

Published: September 10, 2026


Vulnerability identifier: #VU148932
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-3190
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to disclose permission ticket information.

The vulnerability exists due to improper role enforcement in the UMA 2.0 Protection API when handling requests using a token issued for a resource server client. A remote user can enumerate permission tickets to disclose permission ticket information.

The token does not need the uma_protection role.


Affected software

Keycloak
Red Hat build of Keycloak

How to mitigate CVE-2026-3190

Install security update from vendor's website.

Keycloak - update to 26.5.6
Red Hat build of Keycloak - update to 26.4.11

External References

Related Security Bulletins