Security researcher M4D3RS, has submitted on 10/06/2014 a cross-site-scripting (XSS) vulnerability affecting www.fbi.com, which at the time of submission ranked 1431720 on the web according to Alexa.
We manually validated and published a mirror of this vulnerability on 13/03/2015. It is currently unfixed.
If you believe that this security issue has been corrected, please send us an e-mail.
Vulnerable URL: http://www.fbi.com/?not_found=%3Ch1%3EXSS%20BY%20Mr.M4D3RS%3C/h1%3E%3Cscript%3Ealert%28document.cookie%29%3C/script%3E