A vulnerability has been discovered and corrected in python-django:

The utils.http.is_safe_url function in Django before 1.4.20, 1.5.x,
1.6.x before 1.6.11, 1.7.x before 1.7.7, and 1.8.x before 1.8c1 does
not properly validate URLs, which allows remote attackers to conduct
cross-site scripting (XSS) attacks via a control character in a URL,
as demonstrated by a x08javascript: URL (CVE-2015-2317).

The updated packages provides a solution for this security issue.