BEA WebLogic Server 7.0 through 7.0 SP6, 8.1 through 8.1 SP5, 9.0, and 9.1 does not enforce a security policy that declares permissions for EJB methods that have array parameters, which allows remote attackers to obtain unauthorized access to these methods.
http://www.vupen.com/english/advisories/2007/0213
http://www.securityfocus.com/bid/22082
http://securitytracker.com/id?1017525