GNU Parallel before 20150522 (Nepal), when using (1) --cat or (2) --fifo with --sshlogin, allows local users to write to arbitrary files via a symlink attack on a temporary file.
http://www.securityfocus.com/bid/74961
http://lists.opensuse.org/opensuse-updates/2015-05/msg00090.html
http://lists.gnu.org/archive/html/parallel/2015-05/msg00024.html
http://lists.gnu.org/archive/html/parallel/2015-04/msg00045.html