The user interface in WebKit, as used in Apple Safari before 6.2.4, 7.x before 7.1.4, and 8.x before 8.0.4, does not display URLs consistently, which makes it easier for remote attackers to conduct phishing attacks via a crafted URL.
http://lists.apple.com/archives/security-announce/2015/Apr/msg00002.html
http://lists.apple.com/archives/security-announce/2015/Mar/msg00004.html
https://support.apple.com/HT204560