django.middleware.common.CommonMiddleware in Django 1.11.x before 1.11.15 and 2.0.x before 2.0.8 has an Open Redirect.
https://www.djangoproject.com/weblog/2018/aug/01/security-releases/
https://www.debian.org/security/2018/dsa-4264
https://usn.ubuntu.com/3726-1/
https://access.redhat.com/errata/RHSA-2019:0265