Cross-site scripting (XSS) vulnerability in Bugzilla before 2.18, including 2.16.x before 2.16.11, allows remote attackers to inject arbitrary HTML and web script via forced error messages, as demonstrated using the action parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/18728
https://bugzilla.mozilla.org/show_bug.cgi?id=272620
http://www.securityfocus.com/bid/12154
http://www.mikx.de/index.php?p=6
http://lists.grok.org.uk/pipermail/full-disclosure/2004-December/030222.html
http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=001040