Unspecified vulnerability in BEA WebLogic Portal 8.1 up to SP5 causes a JSR-168 Portlet to be retrieved from the cache for the wrong session, which might allow one user to see a Portlet of another user.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25345
http://www.vupen.com/english/advisories/2006/1022
http://www.securityfocus.com/bid/17164
http://securitytracker.com/id?1015791