In Django 2.2 before 2.2.25, 3.1 before 3.1.14, and 3.2 before 3.2.10, HTTP requests for URLs with trailing newlines could bypass upstream access control based on URL paths.
https://www.openwall.com/lists/oss-security/2021/12/07/1
https://www.djangoproject.com/weblog/2021/dec/07/security-releases/
https://security.netapp.com/advisory/ntap-20211229-0006/