[1.3.x] Fixed a security issue in image uploading. Disclosure and release forthcoming.
[1.3.x] Fixed a security issue in image uploading. Disclosure and release forthcoming.

Backport of dd16b17099b7d86f27773df048c5014cf439b282 from master.

django-nonrel/django-nonrel,django-nonrel/django-nonrel,django-nonrel/django-nonrel