Bugzilla 2.17.1 through 2.18, 2.19.1, and 2.19.2, when a user is prompted to log in while attempting to view a chart, displays the password in the URL, which may allow local users to gain sensitive information from web logs or browser history.
http://www.vupen.com/english/advisories/2005/0533
http://www.securityfocus.com/bid/13605
http://marc.info/?l=bugtraq&m=111592031902962&w=2
http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=001040