Security researcher BackDoor, has submitted on 23/09/2007 a cross-site-scripting (XSS) vulnerability affecting postnsign.com, which at the time of submission ranked 0 on the web according to Alexa.
We manually validated and published a mirror of this vulnerability on 28/09/2007. It is currently unfixed.
If you believe that this security issue has been corrected, please send us an e-mail.
Vulnerable URL: http://postnsign.com/welcome/?mod=search&type=simple&q="><script>alert("BackDoor")</script>