CVE-2025-13467: Keycloak LDAP User Federation provider enables admin-triggered untrusted Java deserialization

CVE-2025-13467 · Severity: medium · CVSS 5.5 · Published 2025-11-25

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.

Technologies: org.keycloak:keycloak-ldap-federation (Maven). Vendors: Maven.

Quick answers

Is CVE-2025-13467 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-13467 being exploited in the wild.
How severe is CVE-2025-13467?
Medium severity, with a CVSS score of 5.5, published 25 November 2025.
Which products and versions are affected?
org.keycloak:keycloak-ldap-federation (Maven) ECOSYSTEM:introduced=26.3.0,fixed=26.4.6.
Is there a fix for CVE-2025-13467?
Yes. org.keycloak:keycloak-ldap-federation (Maven): upgrade to 26.4.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-13467?
Check whether you run org.keycloak:keycloak-ldap-federation (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • org.keycloak:keycloak-ldap-federation (Maven): upgrade to 26.4.6 or later
    # set org.keycloak:keycloak-ldap-federation to 26.4.6 in your pom.xml or build.gradle

Affected products

  • org.keycloak:keycloak-ldap-federation (Maven) ECOSYSTEM:introduced=26.3.0,fixed=26.4.6

Identifiers

  • CVE-2025-13467
  • GHSA-4hx9-48xh-5mxr

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