The Jakarta Security LDAP identity store does not neutralize special characters in the caller name before using it in directory queries. A remote unauthenticated attacker can alter the queries to enumerate accounts, infer directory attribute values, or influence which directory entry the login is validated against. Only applications using the LDAP identity store are affected. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.