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[USN-8232-1] Django vulnerabilities

Posted on 05 May 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8232-1
May 05, 2026

python-django vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in Django.

Software Description:
- python-django: High-level Python web development framework

Details:

It was discovered that Django did not vary cached response headers on
cookies when sessions were not modified while SESSION_SAVE_EVERY_REQUEST
was enabled. A remote attacker could possibly use this issue to steal a
user's session. (CVE-2026-35192)

Kyle Agronick and Jacob Walls discovered that Django incorrectly handled
ASGI requests with missing or understated Content-Length header values.
A remote attacker could possibly use this issue to cause Django to use
excessive resources, leading to a denial of service. (CVE-2026-5766)

Ahmad Sadeddin discovered that Django UpdateCacheMiddleware incorrectly
cached requests where the Vary header contained an asterisk. A remote
attacker could possibly use this issue to obtain sensitive information.
(CVE-2026-6907)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
python3-django 3:5.2.9-0ubuntu4.1

Ubuntu 25.10
python3-django 3:5.2.4-1ubuntu2.5

Ubuntu 24.04 LTS
python3-django 3:4.2.11-1ubuntu1.16

Ubuntu 22.04 LTS
python3-django 2:3.2.12-2ubuntu1.27

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8232-1
CVE-2026-35192, CVE-2026-5766, CVE-2026-6907

Package Information:
https://launchpad.net/ubuntu/+source/python-django/3:5.2.9-0ubuntu4.1
https://launchpad.net/ubuntu/+source/python-django/3:5.2.4-1ubuntu2.5
https://launchpad.net/ubuntu/+source/python-django/3:4.2.11-1ubuntu1.16
https://launchpad.net/ubuntu/+source/python-django/2:3.2.12-2ubuntu1.27

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