Multiple cross-site scripting (XSS) vulnerabilities in FormMail.pl in Matt Wright FormMail 1.92, and possibly earlier, allow remote attackers to inject arbitrary web script or HTML via javascript: URIs in the (1) request and (2) return_link_url parameters.
http://www.ush.it/team/ush/hack-formmail_192/adv.txt
http://www.securityfocus.com/bid/34929
http://www.securityfocus.com/archive/1/503446/100/0/threaded