Cross-site scripting (XSS) vulnerability in UserControls/Popups/frmHelp.aspx in SmarterStats 5.3, 5.3.3819, and possibly other 5.3 versions, allows remote attackers to inject arbitrary web script or HTML via the url parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/61724
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-3423
http://secunia.com/advisories/41389
http://cloudscan.blogspot.com/2010/09/vendorsmarterstats-bug-cross-site.html