WebKit in Apple iOS before 10, iTunes before 12.5.1 on Windows, and Safari before 10 does not properly restrict access to the location variable, which allows remote attackers to obtain sensitive information via a crafted web site.
https://support.apple.com/HT207158
https://support.apple.com/HT207157
https://support.apple.com/HT207143
http://www.securitytracker.com/id/1036854
http://www.securityfocus.com/bid/93066
http://mksben.l0.cm/2016/09/safari-uxss-showModalDialog.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00012.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00007.html