Bug 2487906 (CVE-2026-11986)
| Summary: | CVE-2026-11986 keycloak-rest-admin-ui-ext: Authorization Bypass vulnerability in the admin-ui-ext bulk role-mapping-delete endpoints of Keycloak | ||
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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: | aschwart, asoldano, aszczucz, bbaranow, bmaxwell, boliveir, bstansbe, dlofthou, drichtar, istudens, ivassile, iweiss, mosmerov, mposolda, msvehla, nwallace, pesilva, pjindal, pmackay, rmartinc, rstancel, security-response-team, 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 admin-ui-ext component of Keycloak, which provides extended administrative user interface capabilities. The issue occurs because certain bulk role-removal endpoints fail to perform granular permission checks when deleting role mappings. This allows a delegated administrator with limited permissions to remove highly privileged roles from other users or groups, potentially disrupting administrative access control.
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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: | |
| Embargoed: | |||
An authorization bypass vulnerability exists in the Keycloak admin-ui-ext bulk role-mapping-delete endpoints (POST /admin/realms/{realm}/ui-ext/role-mapping-delete/users/{id} and POST /admin/realms/{realm}/ui-ext/role-mapping-delete/groups/{id}). The implementation only performs a container-level authorization check (requireMapRoles) but fails to enforce the per-role authorization check (requireMapRole) required by the standard Admin REST API. As a result, an authenticated attacker with high privileges (specifically a delegated administrator with manage-users permissions) can bypass intended restrictions to remove sensitive realm-management roles (such as manage-realm, manage-clients, or realm-admin) from other administrators. This operation is correctly blocked with a 403 Forbidden error when attempted via the standard Admin REST API.