Vulnerability in Red Hat Build Of Keycloak 26.4
CVE-2026-3190
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Red Hat Build Of Keycloak 26.4 — versions 26.4.11-1, 26.4-14
- Red Hat Build Of Keycloak 26.4.11
- Red Hat Build Of Keycloak
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2026:6477 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:6478 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-3190 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-3190?
- CVE-2026-3190 is a medium-severity vulnerability in Red Hat Build Of Keycloak 26.4, classified under Improper Handling of Insufficient Permissions or Privileges. CVSS score: 4.3/10. Published 2026-03-26.
- How severe is CVE-2026-3190?
- Medium severity. CVSS v3 base score is 4.3 out of 10.