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Date: Mon, 4 Mar 2024 10:06:50 +0100
From: Mariusz Felisiak <>
Subject: Django: CVE-2024-27351: Potential regular expression
 denial-of-service in django.utils.text.Truncator.words()

In accordance with `our security release policy
<>`_, the 
Django team
is issuing
`Django 5.0.3 <>`_,
`Django 4.2.11 
<>`_, and
`Django 3.2.25 <>`_.
These releases addresses the security issue detailed below. We encourage all
users of Django to upgrade as soon as possible.

CVE-2024-27351: Potential regular expression denial-of-service in 

``django.utils.text.Truncator.words()`` method (with ``html=True``) and
``truncatewords_html`` template filter were subject to a potential
regular expression denial-of-service attack using a suitably crafted string
(follow up to CVE-2019-14232 and CVE-2023-43665).

Thanks Seokchan Yoon for the report.

This issue has severity "moderate" according to the Django security policy.

Affected supported versions

* Django 5.0
* Django 4.2
* Django 3.2


Patches to resolve the issue have been applied to the 5.0, 4.2, and 3.2
release branches. The patches may be obtained from the following changesets:

* On the `5.0 release branch 
* On the `4.2 release branch 
* On the `3.2 release branch 

The following releases have been issued:

* Django 5.0.3 (`download Django 5.0.3 
<>`_ | 
`5.0.3 checksums 
* Django 4.2.11 (`download Django 4.2.11 
<>`_ | 
`4.2.11 checksums 
* Django 3.2.25 (`download Django 3.2.25 
<>`_ | 
`3.2.25 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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