Advisories for Maven/Org.openidentityplatform.opendj/Opendj-Server-Legacy package

2026

OpenDJ Pre-Auth RCE via Java Deserialization in JMX RMI

Description A Deserialization of Untrusted Data (CWE-502) issue in OpenDJ's JMX RMI connector allows an unauthenticated remote attacker to deserialize arbitrary Java objects on the server. The vulnerability exists because the platform reads and processes attacker-controlled bytes prior to authentication. This affects OpenDJ Community Edition through 5.1.0. This has been patched in version 5.1.1.

2025

OpenDJ Denial of Service (DoS) using alias loop

A denial-of-service (DoS) vulnerability in OpenDJ has been discovered that causes the server to become unresponsive to all LDAP requests without crashing or restarting. This issue occurs when an alias loop exists in the LDAP database. If an ldapsearch request is executed with alias dereferencing set to "always" on this alias entry, the server stops responding to all future requests. I have confirmed this issue using the latest OpenDJ version …