The CFNetwork Proxies subsystem in Apple iOS before 9.3.2, OS X before 10.11.5, and tvOS before 9.2.1 mishandles URLs in http and https requests, which allows remote attackers to obtain sensitive information via unspecified vectors.
lists.apple.com/archives/security-announce/2016/May/msg00001.html
lists.apple.com/archives/security-announce/2016/May/msg00002.html
lists.apple.com/archives/security-announce/2016/May/msg00004.html
www.securityfocus.com/bid/90697
www.securitytracker.com/id/1035890
support.apple.com/HT206564
support.apple.com/HT206567
support.apple.com/HT206568
www.kb.cert.org/vuls/id/877625