CVE-2026-11577

Description

A flaw was found in Keycloak. A limited administrator can exploit an improper access control vulnerability in the POST /admin/realms/{realm}/partialImport endpoint. This allows them to bypass Fine-Grained Admin Permissions (FGAP) and escalate their privileges to a full realm administrator by importing users with realm-admin role mappings.

CVSS Vector

References

• https://access.redhat.com/security/cve/CVE-2026-11577
• https://bugzilla.redhat.com/show_bug.cgi?id=2459993
• https://github.com/keycloak/keycloak/issues/9387