Mavenlink: Flash XSS on swfupload.swf showing at app.mavenlink.com

Hello Security I like to report a XSS that affect all users. This flash XSS can be very dangerous. Vulnerable URL: https://app.mavenlink.com/flash/swfupload.swf?movieName=";catcheif!self.aself.a=!alertdocument.domain;// I attach image of Proof: Any problem reproducing this bug please let me know...