Race condition in BEA WebLogic Server and Express 5.1 through 7.0.0.1, when using in-memory session replication or replicated stateful session beans, causes the same buffer to be provided to two users, which could allow one user to see session data that was intended for another user.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11221
http://www.securitytracker.com/id?1006018
http://www.securityfocus.com/bid/6717
http://dev.bea.com/resourcelibrary/advisoriesnotifications/BEA03-26.01.jsp