Django 3.0.10 release notes — Django documentation

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Django/docs/3.2.x/releases/3.0.10

Django 3.0.10 release notes

September 1, 2020

Django 3.0.10 fixes two security issues and two data loss bugs in 3.0.9.

CVE-2020-24583: Incorrect permissions on intermediate-level directories on Python 3.7+

On Python 3.7+, :setting:`FILE_UPLOAD_DIRECTORY_PERMISSIONS` mode was not applied to intermediate-level directories created in the process of uploading files and to intermediate-level collected static directories when using the :djadmin:`collectstatic` management command.

You should review and manually fix permissions on existing intermediate-level directories.


CVE-2020-24584: Permission escalation in intermediate-level directories of the file system cache on Python 3.7+

On Python 3.7+, the intermediate-level directories of the file system cache had the system’s standard umask rather than 0o077 (no group or others permissions).


Bugfixes

  • Fixed a data loss possibility in the select_for_update(). When using related fields pointing to a proxy model in the of argument, the corresponding model was not locked (:ticket:`31866`).
  • Fixed a data loss possibility, following a regression in Django 2.0, when copying model instances with a cached fields value (:ticket:`31863`).