CVE-2025-13467

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

State: Published
Severity: 5.5 Medium
Published: Nov 25, 2025
Updated: Dec 23, 2025
Reserved: Nov 20, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N	redhat

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
KeycloakKeycloak	before 26.4.6Affected
Red Hat build of Keycloak 26.2Red Hat	26.2.11-1 and laterNot affected
Red Hat build of Keycloak 26.2Red Hat	26.2-12 and laterNot affected
Red Hat build of Keycloak 26.2Red Hat	26.2-12 and laterNot affected
Red Hat build of Keycloak 26.2.11Red Hat
Red Hat build of Keycloak 26.4Red Hat	26.4.6-1 and laterNot affected
Red Hat build of Keycloak 26.4Red Hat	26.4-6 and laterNot affected
Red Hat build of Keycloak 26.4Red Hat	26.4-5 and laterNot affected
Red Hat build of Keycloak 26.4.6Red Hat

References

RHSA-2025:22088vendor-advisory
RHSA-2025:22089vendor-advisory
RHSA-2025:22090vendor-advisory
RHSA-2025:22091vendor-advisory
https://access.redhat.com/security/cve/CVE-2025-13467vdb-entry
RHBZ#2416038issue-tracking
https://github.com/keycloak/keycloak/commit/754c070cf8ca187dcc71f0f72ff3130ff2195328
https://github.com/keycloak/keycloak/issues/44478

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