emacs/lisp/progmodes/python.el in Emacs 22.1 and 22.2 imports Python script from the current working directory during editing of a Python file, which allows local users to execute arbitrary code via a Trojan horse Python file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/45021
https://bugzilla.novell.com/show_bug.cgi?id=424340
http://www.securityfocus.com/bid/31052
http://www.mandriva.com/security/advisories?name=MDVSA-2008:216
http://security.gentoo.org/glsa/glsa-200902-06.xml
http://secunia.com/advisories/34004
http://secunia.com/advisories/31982
http://lists.opensuse.org/opensuse-security-announce/2008-09/msg00004.html
http://lists.gnu.org/archive/html/emacs-devel/2008-09/msg00215.html