CVE-2025-13467
November 25, 2025
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.
Affected Packages
https://github.com/keycloak/keycloak.git (GITHUB):
Affected version(s) >=1.0-alpha-1 <26.2.11Fix Suggestion:
Update to version 26.2.11https://github.com/keycloak/keycloak.git (GITHUB):
Affected version(s) >=26.3.0 <26.4.6Fix Suggestion:
Update to version 26.4.6org.keycloak:keycloak-ldap-federation (JAVA):
Affected version(s) >=26.3.0 <26.4.6Fix Suggestion:
Update to version 26.4.6org.keycloak:keycloak-ldap-federation (JAVA):
Affected version(s) >=1.0-beta-4 <26.2.11Fix Suggestion:
Update to version 26.2.11org.keycloak:keycloak-ldap-federation (JAVA):
Affected version(s) >=26.3.0 <26.4.6Fix Suggestion:
Update to version 26.4.6Related Resources (13)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Deserialization of Untrusted Data
EPSS
Base Score:
0.02
