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Date: Thu, 1 Jul 2021 10:08:07 +0200
From: Mariusz Felisiak <>
Subject: Django: CVE-2021-35042: Potential SQL injection via unsanitized
 QuerySet.order_by() input

In accordance with `our security release policy
<>`_, the 
Django team
is issuing
`Django 3.2.5 <>`_ and
`Django 3.1.13 <>`_.
These releases address the security issue with severity "high" detailed 
below. We encourage all users of Django to upgrade as soon as possible.

CVE-2021-35042: Potential SQL injection via unsanitized 
``QuerySet.order_by()`` input

Unsanitized user input passed to ``QuerySet.order_by()`` could bypass 
column reference validation in path marked for deprecation resulting in a
potential SQL injection even if a deprecation warning is emitted.

As a mitigation the strict column reference validation was restored for the
duration of the deprecation period. This regression appeared in 3.1 as a 
effect of fixing `#31426 <>`_.

The issue is not present in the main branch as the deprecated path has been

Thanks to Joel Saunders for the report.

Affected supported versions

* Django 3.2
* Django 3.1


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

* On the `3.2 release branch 
* On the `3.1 release branch 

The following releases have been issued:

* Django 3.2.5 (`download Django 3.2.5 
<>`_ | 
`3.2.5 checksums 
* Django 3.1.13 (`download Django 3.1.13 
<>`_ | 
`3.1.13 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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