WebKit in Apple Safari before 6.2.1, 7.x before 7.1.1, and 8.x before 8.0.1 allows remote attackers to bypass the Same Origin Policy via crafted Cascading Style Sheets (CSS) token sequences within an SVG file in the SRC attribute of an IMG element.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-4392
http://support.apple.com/kb/HT6596
http://support.apple.com/HT204246
http://support.apple.com/HT204245
http://lists.apple.com/archives/security-announce/2015/Jan/msg00001.html
http://lists.apple.com/archives/security-announce/2015/Jan/msg00000.html
http://lists.apple.com/archives/security-announce/2014/Dec/msg00000.html