In Django 2.2 before 2.2.21, 3.1 before 3.1.9, and 3.2 before 3.2.1, MultiPartParser, UploadedFile, and FieldFile allowed directory traversal via uploaded files with suitably crafted file names.
www.openwall.com/lists/oss-security/2021/05/04/3
docs.djangoproject.com/en/3.2/releases/security/
github.com/django/django/commit/04ac1624bdc2fa737188401757cf95ced122d26d
github.com/django/django/commit/25d84d64122c15050a0ee739e859f22ddab5ac48
github.com/django/django/commit/c98f446c188596d4ba6de71d1b77b4a6c5c2a007
groups.google.com/forum/#%21forum/django-announce
lists.debian.org/debian-lts-announce/2021/05/msg00005.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVKYPHR3TKR2ESWXBPOJEKRO2OSJRZUE/
security.netapp.com/advisory/ntap-20210618-0001/
www.djangoproject.com/weblog/2021/may/04/security-releases/