Cross-site scripting (XSS) vulnerability in cgi-bin/hotspotlogin.cgi in Hotspot Express hotEx Billing Manager 73 allows remote attackers to inject arbitrary web script or HTML via the reply parameter.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-2871
http://www.securityfocus.com/bid/73941
http://www.securityfocus.com/archive/1/535186/100/0/threaded
http://seclists.org/fulldisclosure/2015/Apr/18
http://packetstormsecurity.com/files/131297/HotExBilling-Manager-73-Cross-Site-Scripting.html