Cross-site scripting (XSS) vulnerability in ActionScript in arbitrary Shockwave Flash (SWF) controller files created by Techsmith Camtasia Studio before 5 allows remote attackers to inject arbitrary additional SWF content via a URL in the csPreloader parameter.
http://www.vupen.com/english/advisories/2008/0066
http://www.securityfocus.com/bid/27107
http://www.securityfocus.com/archive/1/485722/100/100/threaded