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CVEHIGH2026-06-14

CVE-2026-11577: high vulnerability (CVSS 7.2)

CVE-2026-11577 impacts Keycloak, enabling limited admins to exploit improper access controls via the partialImport endpoint. This bypasses Fine-Grained Admin Permissions, allowing privilege escalation to full realm administrator by importing users with elevated role mappings.

// OPERATOR NOTE — S.MANE

Mitigate by restricting access to the partialImport endpoint and auditing user role mappings. Prioritize patching systems to prevent exploitation and ensure FGAP enforcement for sensitive operations.

Keycloak's POST /admin/realms/{realm}/partialImport endpoint suffers from an improper access control vulnerability. Limited administrators can bypass Fine-Grained Admin Permissions to escalate their privileges.

Attackers exploit this flaw by importing users with realm-admin role mappings, effectively gaining full realm administrator access. This can lead to unauthorized actions across the affected realm.

Administrators should patch Keycloak to address CVE-2026-11577 and implement strict endpoint access controls. Regular audits of admin permissions can further reduce the risk of exploitation.

#CVE-2026-11577