Cross-site scripting (XSS) vulnerability in default.asp in FogBugz 4.029, and other versions before 4.0.33, allows remote attackers to inject arbitrary web script or HTML via the dest parameter in the pgLogon page.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24103
http://www.vupen.com/english/advisories/2006/0174
http://www.securityfocus.com/bid/16216
http://www.securityfocus.com/archive/1/421729/100/0/threaded
http://www.fogcreek.com/FogBugz/KB/releaseNotes/WhatsNewInFogBugz4.0.33.html