Apple Safari before 6.1.1 and 7.x before 7.0.1 allows remote attackers to bypass the Same Origin Policy and discover credentials by triggering autofill of subframe form fields.
http://www.securityfocus.com/bid/64355
http://support.apple.com/kb/HT6441
http://support.apple.com/kb/HT6162
http://archives.neohapsis.com/archives/bugtraq/2014-09/0106.html
http://archives.neohapsis.com/archives/bugtraq/2013-12/0087.html
http://archives.neohapsis.com/archives/bugtraq/2013-12/0086.html