[USN-8154-1] Django vulnerabilities

========================================================================== Ubuntu Security Notice USN-8154-1 April 07, 2026 python-django vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in Django. Software Description: - python-django: High-level Python web development framework 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 25.10 python3-django 3:5.2.4-1ubuntu2.4 Ubuntu 24.04 LTS python3-django 3:4.2.11-1ubuntu1.15 Ubuntu 22.04 LTS python3-django 2:3.2.12-2ubuntu1.26 Ubuntu 20.04 LTS python3-django 2:2.2.12-1ubuntu0.29+esm8 Available with Ubuntu Pro Ubuntu 18.04 LTS python-django 1:1.11.11-1ubuntu1.21+esm15 Available with Ubuntu Pro python3-django 1:1.11.11-1ubuntu1.21+esm15 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8154-1 CVE-2026-33033, CVE-2026-33034, CVE-2026-3902, CVE-2026-4277, CVE-2026-4292 Package Information: https://launchpad.net/ubuntu/+source/python-django/3:5.2.4-1ubuntu2.4 https://launchpad.net/ubuntu/+source/python-django/3:4.2.11-1ubuntu1.15 https://launchpad.net/ubuntu/+source/python-django/2:3.2.12-2ubuntu1.26