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                            CERT-Renater

                Note d'Information No. 2025/VULN773
_____________________________________________________________________

DATE                : 06/11/2025

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Django versions prior to 5.2.8,
                                      5.1.14, 4.2.26.

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https://www.djangoproject.com/weblog/2025/nov/05/security-releases/
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Django security releases issued: 5.2.8, 5.1.14, and 4.2.26
Posted by Natalia Bidart on 5 novembre 2025

In accordance with our security release policy, the Django team is
issuing releases for Django 5.2.8, Django 5.1.14, and Django 4.2.26.
These releases address the security issues detailed below. We
encourage all users of Django to upgrade as soon as possible.


CVE-2025-64458: Potential denial-of-service vulnerability in
HttpResponseRedirect and HttpResponsePermanentRedirect on Windows

NFKC normalization in Python is slow on Windows. As a consequence,
HttpResponseRedirect, HttpResponsePermanentRedirect, and redirect
were subject to a potential denial-of-service attack via certain
inputs with a very large number of Unicode characters.

Thanks to Seokchan Yoon (https://ch4n3.kr/) for the report.

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


CVE-2025-64459: Potential SQL injection via _connector keyword
argument in QuerySet and Q objects

The methods QuerySet.filter(), QuerySet.exclude(), and QuerySet.get(),
and the class Q() were subject to SQL injection when using a suitably
crafted dictionary, with dictionary expansion, as the _connector
argument.

Thanks to cyberstan for the report.

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


Affected supported versions

    Django main
    Django 6.0 (currently at beta status)
    Django 5.2
    Django 5.1
    Django 4.2


Resolution

Patches to resolve the issue have been applied to Django's main,
6.0 (currently at beta status), 5.2, 5.1, and 4.2 branches. The
patches may be obtained from the following changesets.


CVE-2025-64458: Potential denial-of-service vulnerability in
HttpResponseRedirect and HttpResponsePermanentRedirect on Windows

    On the main branch
    On the 6.0 branch
    On the 5.2 branch
    On the 5.1 branch
    On the 4.2 branch


CVE-2025-64459: Potential SQL injection via _connector keyword
argument in QuerySet and Q objects

    On the main branch
    On the 6.0 branch
    On the 5.2 branch
    On the 5.1 branch
    On the 4.2 branch


The following releases have been issued

    Django 5.2.8 (download Django 5.2.8 | 5.2.8 checksums)
    Django 5.1.14 (download Django 5.1.14 | 5.1.14 checksums)
    Django 4.2.26 (download Django 4.2.26 | 4.2.26 checksums)

The PGP key ID used for this release is Natalia Bidart:
2EE82A8D9470983E


General notes regarding security reporting

As always, we ask that potential security issues be reported via
private email to security@djangoproject.com, and not via Django's
Trac instance, nor via the Django Forum. Please see our security
policies for further information.


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