new_ticket.cgi in Hostflow 2.2.1-15 allows remote attackers to steal and replay authentication credentials via an IMG tag in the desc parameter ("Ticket Description" field) that points to a URL that captures referer URLs, possibly due to a cross-site scripting (XSS) vulnerability or a leak of credentials in referer URLs.
https://exchange.xforce.ibmcloud.com/vulnerabilities/27426
http://www.vupen.com/english/advisories/2006/2570
http://www.securityfocus.com/bid/18695