Security researcher Mystick, has submitted on 29/08/2009 a cross-site-scripting (XSS) vulnerability affecting www.gmailsignature.net, which at the time of submission ranked 2469092 on the web according to Alexa.
We manually validated and published a mirror of this vulnerability on 12/09/2009. It is currently unfixed.
If you believe that this security issue has been corrected, please send us an e-mail.
Vulnerable URL: http://www.gmailsignature.net/?user=%22%3E%3Cscript%3Ealert%28%2FXSS%2F.source%29%3C%2Fscript%3E