Home / mailings

PDF

[USN-8154-2] Django vulnerabilities

Posted on 09 April 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8154-2
April 09, 2026

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Django.

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

Details:

USN-8154-1 fixed vulnerabilities in Django. This update provides the
corresponding updates for CVE-2026-33033 and CVE-2026-4292 in Ubuntu 14.04
LTS and Ubuntu 16.04 LTS, and CVE-2026-4277 in Ubuntu 16.04 LTS.

Original advisory details:

Seokchan Yoon discovered that Django incorrectly handled copying memory
when parsing multipart uploads with excessive whitespace. A remote
attacker could possibly use this issue to cause Django to use excessive
resources, leading to a denial of service. (CVE-2026-33033)

It was discovered that Django did not enforce an upload memory size limit
in the Content-Length header. A remote attacker could possibly use this
issue to cause Django to use excessive resources, leading to a denial of
service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.10.
(CVE-2026-33034)

Tarek Nakkouch discovered that Django incorrectly handled underscores in
the ASGI headers. A remote attacker could possibly use this issue to spoof
HTTP headers. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS,
and Ubuntu 25.10. (CVE-2026-3902)

It was discovered that Django incorrectly handled verification of model
data created with POST requests. A remote attacker could possibly use this
issue to forge new model permissions. (CVE-2026-4277, CVE-2026-4292)

Update instructions:

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

Ubuntu 16.04 LTS
python-django 1.8.7-1ubuntu5.15+esm12
Available with Ubuntu Pro
python3-django 1.8.7-1ubuntu5.15+esm12
Available with Ubuntu Pro

Ubuntu 14.04 LTS
python-django 1.6.11-0ubuntu1.3+esm11
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-8154-2
https://ubuntu.com/security/notices/USN-8154-1
CVE-2026-33033, CVE-2026-4277, CVE-2026-4292

--===============7868612896980870077==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

TOP