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Date: Tue, 6 Apr 2021 09:54:31 +0200
From: Mariusz Felisiak <>
Subject: Django: CVE-2021-28658: Potential directory-traversal via uploaded

In accordance with `our security release policy 
<>`_, the 
Django team is issuing
`Django 3.1.8 <>`_,
`Django 3.0.14 
<>`_ and
`Django 2.2.20 <>`_.
These releases address the security issue with severity "low" detailed 
below. We encourage all users of Django to upgrade as soon as possible.

CVE-2021-28658: Potential directory-traversal via uploaded files

``MultiPartParser`` allowed directory-traversal via uploaded files with
suitably crafted file names.

Built-in upload handlers were not affected by this vulnerability.

Thank you to Dennis Brinkrolf for the report.

Affected supported versions

* Django main branch
* Django 3.2 (currently at release candidate status)
* Django 3.1
* Django 3.0
* Django 2.2


Patches to resolve the issue have been applied to Django's main branch and
the 3.2, 3.1, 3.0, and 2.2 release branches. The patches may be obtained 
from the following changesets:

* On the `main branch 
* On the `3.2 release branch 
* On the `3.1 release branch 
* On the `3.0 release branch 
* On the `2.2 release branch 

The following releases have been issued:

* Django 3.1.8 (`download Django 3.1.8 
<>`_ | 
`3.1.8 checksums 
* Django 3.0.14 (`download Django 3.0.14 
<>`_ | 
`3.0.14 checksums 
* Django 2.2.20 (`download Django 2.2.20 
<>`_ | 
`2.2.20 checksums 

The PGP key ID used for this release is Mariusz Felisiak: 
`2EF56372BA48CD1B <>`_.

General notes regarding security reporting

As always, we ask that potential security issues be reported via
private email to ````, and not via Django's
Trac instance or the django-developers list. Please see `our security
policies <>`_ for further

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