SB2025112714 - Deserialization of untrusted data in Keycloak LDAP User Federation provider
Published: November 27, 2025 Updated: December 19, 2025
Security Bulletin ID
SB2025112714
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Deserialization of Untrusted Data (CVE-ID: CVE-2025-13467)
The vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to insecure input validation when processing serialized data in the Keycloak LDAP User Federation provider. A remote privileged user can create a malicious LDAP server configuration and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.