GNU wget before 1.18 allows remote servers to write to arbitrary files by redirecting a request from HTTP to a crafted FTP resource.
https://security.paloaltonetworks.com/CVE-2016-4971
https://security.gentoo.org/glsa/201610-11
http://www.ubuntu.com/usn/USN-3012-1
http://www.securitytracker.com/id/1036133
http://www.securityfocus.com/bid/91530
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://lists.gnu.org/archive/html/info-gnu/2016-06/msg00004.html
http://git.savannah.gnu.org/cgit/wget.git/commit/?id=e996e322ffd42aaa051602da182d03178d0f13e1