template/en/default/list/list.js.tmpl in Bugzilla 2.x and 3.x before 3.6.9, 3.7.x and 4.0.x before 4.0.6, and 4.1.x and 4.2.x before 4.2.1 does not properly handle multiple logins, which allows remote attackers to conduct cross-site scripting (XSS) attacks and obtain sensitive bug information via a crafted web page.
archives.neohapsis.com/archives/bugtraq/2012-04/0135.html
lists.fedoraproject.org/pipermail/package-announce/2012-May/079432.html
lists.fedoraproject.org/pipermail/package-announce/2012-May/079481.html
lists.fedoraproject.org/pipermail/package-announce/2012-May/079604.html
bugzilla.mozilla.org/show_bug.cgi?id=745397