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

Medium severity · published Nov 25, 2025

CVE-2025-13467

Org.keycloak.storage.ldap: keycloak: deserialization of untrusted data in ldap user federation

5.5

CVSS

0.5%

EPSS

On KEV

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Attack vector

Network

Complexity

Low

Privileges

High

User interaction

None

Confidentiality

Low

Integrity

Low

Availability

None

Scope

Changed

Exploitation

Is it being used?

Exploit prediction (EPSS)0.5% · higher than 41% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Keycloak · Keycloak

before 26.4.6 · source: vendor

Red Hat build of Keycloak 26.2 · Red Hat

All versions, or not specified · source: vendor

Red Hat build of Keycloak 26.4 · Red Hat

All versions, or not specified · source: vendor

Affected product

Keycloak

All Keycloak CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-13467

CVE.org

https://www.cve.org/CVERecord?id=CVE-2025-13467

access.redhat.com

https://access.redhat.com/errata/RHSA-2025:22088

access.redhat.com

https://access.redhat.com/errata/RHSA-2025:22089

access.redhat.com

https://access.redhat.com/errata/RHSA-2025:22090

access.redhat.com

https://access.redhat.com/errata/RHSA-2025:22091

access.redhat.com

https://access.redhat.com/security/cve/CVE-2025-13467

bugzilla.redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2416038