Auth bypass in Red Hat Build Of Keycloak
CVE-2026-17059
A flaw was found in the role-users endpoint of the keycloak-services library, which is the core component of the Keycloak identity and access management solution. The issue occurs because the system fails to check if an administrator has permission to view individual users when listing members of a role. This allows a restricted administrator to see private information, such as names and email addresses, for users they should not be able to access.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-17059?
- CVE-2026-17059 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-07-24.
- How severe is CVE-2026-17059?
- Medium severity. CVSS v3 base score is 6.5 out of 10.