A Information Security Researcher , Mahadev Subedi, from coolpokharacity.com has claimed to have discovered a Persistent Cross site scripting vulnerability in the Mediafire website(mediafire.com)
read more........http://www.ehackingnews.com/2013/01/file-upload-xss-vulnerability-in.html?goback=%2Egmp_115855%2Egde_115855_member_208508709