Cross-site scripting (XSS) vulnerability in gbook.cgi in gBook before 1.0.2 allows remote attackers to inject arbitrary web script or HTML via the User-Agent HTTP header field.
https://exchange.xforce.ibmcloud.com/vulnerabilities/22114
http://www.vupen.com/english/advisories/2005/1617
http://www.securityfocus.com/bid/14725
http://www.securityfocus.com/archive/1/425492/100/0/threaded
http://sourceforge.net/project/shownotes.php?release_id=353531