Mozilla Firefox before 44.0 allows user-assisted remote attackers to spoof a trailing substring in the address bar by leveraging a user's paste of a (1) wyciwyg: URI or (2) resource: URI.
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00002.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1189082
https://security.gentoo.org/glsa/201605-06
http://www.mozilla.org/security/announce/2016/mfsa2016-09.html
http://www.securitytracker.com/id/1034825