The CSRF protection mechanism in Django through 1.2.7 and 1.3.x through 1.3.1 does not properly handle web-server configurations supporting arbitrary HTTP Host headers, which allows remote attackers to trigger unauthenticated forged requests via vectors involving a DNS CNAME record and a web page containing JavaScript code.
Debian Linux Security Advisory 2332-1 - Paul McMillan, Mozilla and the Django core team discovered several vulnerabilities in Django, a Python web framework.