Security researcher Side3ffects, has submitted on 17/10/2010 a cross-site-scripting (XSS) vulnerability affecting www.4shared.com, which at the time of submission ranked 69 on the web according to Alexa.
We manually validated and published a mirror of this vulnerability on 17/10/2010. It is currently unfixed.
If you believe that this security issue has been corrected, please send us an e-mail.