GitHub Advisoryadvisory · Maven
GHSA-4hx9-48xh-5mxr Keycloak LDAP User Federation provider enables admin-triggered untrusted Java deserialization
MEDIUM
Official page ↗
- Aliases
- CVE-2025-13467
- Ecosystem
- Maven
- Packages
- org.keycloak:keycloak-ldap-federation
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-502
- Reviewed
- 2025-12-19
Affected packages
• Maven org.keycloak:keycloak-ldap-federation: >= 26.3.0, < 26.4.6 → fixed in 26.4.6
• Maven org.keycloak:keycloak-ldap-federation: < 26.2.11 → fixed in 26.2.11
Description
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.
Related
Alias · CVE (1)
- CVE-2025-13467 A flaw was found in the Keycloak LDAP User Federation provider. vulnerability
Weakness · CWE (1)
- CWE-502 Deserialization of Untrusted Data weakness
References
- https://github.com/keycloak/keycloak/security/advisories/GHSA-4hx9-48xh-5mxr web
- https://nvd.nist.gov/vuln/detail/CVE-2025-13467 advisory
- https://github.com/keycloak/keycloak/issues/44478 web
- https://github.com/keycloak/keycloak/commit/754c070cf8ca187dcc71f0f72ff3130ff2195328 web
- https://github.com/keycloak/keycloak/commit/b90fec41ff17a70858d830750156a8a2e13ddb82 web
- https://access.redhat.com/errata/RHSA-2025:22088 web
- https://access.redhat.com/security/cve/CVE-2025-13467 web
- https://bugzilla.redhat.com/show_bug.cgi?id=2416038 web
- https://github.com/keycloak/keycloak package
- https://github.com/keycloak/keycloak/releases/tag/26.4.6 web