The Safari Tabs component in Apple Safari before 10 allows remote attackers to spoof the address bar of a tab via a crafted web site.
https://support.apple.com/HT207157
http://www.securitytracker.com/id/1036854
http://www.securityfocus.com/bid/93058
http://lists.apple.com/archives/security-announce/2016/Sep/msg00007.html