Cross-site scripting (XSS) vulnerability in Sun Java System Communications Express 6.2 and 6.3 allows remote attackers to inject arbitrary web script or HTML via the subject field of a message, as demonstrated by a subject containing an IMG element with a SRC attribute that performs a cross-site request forgery (CSRF) attack involving the cmd and argv parameters to cmd.msc.
http://www.vupen.com/english/advisories/2011/0157
http://www.securityfocus.com/archive/1/510154/100/0/threaded
http://www.oracle.com/technetwork/topics/security/cpujan2011-194091.html