Cross-site scripting (XSS) vulnerability in the web management interface in httpd/cgi-bin/ipinfo.cgi in Smoothwall Express 3.1 and 3.0 SP3 and earlier allows remote attackers to inject arbitrary web script or HTML via the IP parameter in a Run action.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.