The Django administration application will, when accessed by
a user who is not sufficiently authenticated, display a login
form and ask the user to provide the necessary credentials
before displaying the requested page. This form will be submitted
to the URL the user attempted to access, by supplying the current
request path as the value of the form's "action" attribute.
The value of the request path was not being escaped, creating an
opportunity for a cross-site scripting (XSS) attack by leading a
user to a URL which contained URL-encoded HTML and/or JavaScript
in the request path.