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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-93vm-mqpw-8wh3 Keycloak LDAP User Federation provider enables admin-triggered untrusted Java deserialization
Fixes

Solution

No solution given by the vendor.


Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

History

Tue, 25 Nov 2025 21:45:00 +0000

Type Values Removed Values Added
References

Tue, 25 Nov 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 25 Nov 2025 16:45:00 +0000

Type Values Removed Values Added
References

Tue, 25 Nov 2025 16:15:00 +0000

Type Values Removed Values Added
Title org.keycloak.storage.ldap: Keycloak: Deserialization of Untrusted Data in LDAP User Federation Org.keycloak.storage.ldap: keycloak: deserialization of untrusted data in ldap user federation
First Time appeared Redhat
Redhat build Keycloak
CPEs cpe:/a:redhat:build_keycloak:26.2::el9
cpe:/a:redhat:build_keycloak:26.4::el9
Vendors & Products Redhat
Redhat build Keycloak
References

Thu, 20 Nov 2025 12:15:00 +0000

Type Values Removed Values Added
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.
Title org.keycloak.storage.ldap: Keycloak: Deserialization of Untrusted Data in LDAP User Federation
Weaknesses CWE-502
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N'}

threat_severity

Moderate


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-11-27T06:34:46.114Z

Reserved: 2025-11-20T03:12:40.336Z

Link: CVE-2025-13467

cve-icon Vulnrichment

Updated: 2025-11-25T16:28:27.482Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-11-25T16:16:06.623

Modified: 2025-11-25T22:16:16.690

Link: CVE-2025-13467

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-11-20T00:00:00Z

Links: CVE-2025-13467 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses