CVE-2025-13467
Org.keycloak.storage.ldap: keycloak: deserialization of untrusted data in ldap user federation
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-502 |
| Vendor | keycloak |
| Product | keycloak |
| Published | Nov 25, 2025 |
| Last Updated | Dec 23, 2025 |
Stay Ahead of the Next One
Get instant alerts for keycloak keycloak
Be the first to know when new medium vulnerabilities affecting keycloak keycloak are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Keycloak / Keycloak
0 < 26.4.6
Red Hat / Red Hat build of Keycloak 26.2
All versions affected Red Hat / Red Hat build of Keycloak 26.2
All versions affected Red Hat / Red Hat build of Keycloak 26.2
All versions affected Red Hat / Red Hat build of Keycloak 26.2.11
All versions affected Red Hat / Red Hat build of Keycloak 26.4
All versions affected Red Hat / Red Hat build of Keycloak 26.4
All versions affected Red Hat / Red Hat build of Keycloak 26.4
All versions affected Red Hat / Red Hat build of Keycloak 26.4.6
All versions affected References
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 github.com: https://github.com/keycloak/keycloak/commit/754c070cf8ca187dcc71f0f72ff3130ff2195328 github.com: https://github.com/keycloak/keycloak/issues/44478
Credits
Red Hat would like to thank Icare & truff (YWH) for reporting this issue.