Medium 5.5Published Nov 25, 2025

CVE-2025-13467Org.keycloak.storage.ldap: keycloak: deserialization of untrusted data in ldap user federation

Updated under an hour ago (Oct 27, 2026, 1:00 PM ET)

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It affects Keycloak and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Keycloak

Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Deferred
Record last updated: Dec 23, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Keycloak Keycloak keycloak:keycloak (from the name)	before 26.4.6	CNA record
Red Hat Red Hat build of Keycloak 26.2 redhat:build_keycloak	from 26.2.11-1 not affected	CNA record

References

References

https://access.redhat.com/errata/RHSA-2025:22088	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:22089	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:22090	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:22091	vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2025-13467	vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2416038	issue-tracking, x-refsource-redhat
https://github.com/keycloak/keycloak/commit/754c070cf8ca187dcc71f0f72ff3130ff2195328
https://github.com/keycloak/keycloak/issues/44478

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.