token.cgi in Bugzilla 3.4rc1 through 3.4.1 places a password in a URL at the beginning of a login session that occurs immediately after a password reset, which allows context-dependent attackers to discover passwords by reading (1) web-server access logs, (2) web-server Referer logs, or (3) the browser history.
https://bugzilla.mozilla.org/show_bug.cgi?id=508189
http://www.securitytracker.com/id?1022902
http://www.securityfocus.com/bid/36372