Keycloak LDAP User Federation provider enables admin-triggered untrusted Java deserialization
A flaw was found in the Keycloak LDAP User Federation provider. This vulnerability allows an authenticated realm administrator to trigger deserialization of untrusted Java objects via a malicious LDAP server configuration. ### Mitigation Disable LDAP referrals in all LDAP user providers in all realms if projects cannot upgrade to the patched versions.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-13467US | — | — | ||
A flaw was found in the Keycloak LDAP User Federation provider. This vulnerability allows an authenticated realm administrator to trigger deserialization of untrusted Java objects… | ||||
02
references
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2025:22088WEB
- https://access.redhat.com/security/cve/CVE-2025-13467WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2416038WEB
- https://github.com/keycloak/keycloakPACKAGE
- https://github.com/keycloak/keycloak/commit/754c070cf8ca187dcc71f0f72ff3130ff2195328WEB
- https://github.com/keycloak/keycloak/commit/b90fec41ff17a70858d830750156a8a2e13ddb82WEB
- https://github.com/keycloak/keycloak/issues/44478WEB
- https://github.com/keycloak/keycloak/releases/tag/26.4.6WEB
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