Bug 2506746 (CVE-2026-17059)
| Summary: | CVE-2026-17059 keycloak-services: keycloak-services: Information disclosure via role-users endpoint bypasses per-user view filter | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | anujha, aschwart, asoldano, aszczucz, bbaranow, bmaxwell, boliveir, bstansbe, dlofthou, drichtar, istudens, ivassile, iweiss, mosmerov, mposolda, msvehla, nwallace, pberan, pesilva, pjindal, pmackay, rmartinc, rstancel, ssilvert, sthorger, thjenkin, vdosoudi, vmuzikar |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
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.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
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A missing authorization filter flaw was found in Keycloaks role-users REST API endpoint. When an authenticated user with restricted administrative privileges such as query-users and view-realm requests the list of users assigned to a specific role via GET /admin/realms/{realm}/roles/{role-name}/users, the system returns the full representation of all member users. The root cause is that the RoleResource.getRoleUserMembers method verifies the callers permission to view the role but fails to apply the per-user view filter to the resulting list. This allows a delegated administrator to bypass intended access restrictions and perform unauthorized enumeration of user PII, including usernames, email addresses, and full names, for any user assigned to a role the administrator can view.