CVE-2025-13467
Keycloak LDAP User Federation provider enables admin-triggered untrusted Java deserialization
5.5
MEDIUM
CVSS 3.1
EPSS 0.06%
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.
How to fix CVE-2025-13467
To remediate CVE-2025-13467, upgrade the affected package to a fixed version below.
- —upgrade to 26.4.6 or later
Is CVE-2025-13467 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 26.3.0, < 26.4.6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N |