# CVE-2023-23969: python3-django: In Django 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, theparsed values of Accept-Language headers are...

CVE-2023-23969 is fixed in 3 products on 1 platform, first by python-django 1:1.11.11-1ubuntu1.19, released February 1, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-23969
- Priority: High
- CVSS: 7.5 (Medium)
- EPSS: 0.4738
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 1, 2023

## Description

In Django 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, theparsed values of Accept-Language headers are cached in order to avoidrepetitive parsing. This leads to a potential denial-of-service vector viaexcessive memory usage if the raw value of Accept-Language headers is verylarge.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-django Debian 12.15 (bookworm) | 3:3.2.17-1 | [DEBIAN-CVE-2023-23969](https://patchblox.com/security/data/fix/linux/debian-cve-2023-23969.md) | Feb 1, 2023 |
| Linux | python-django Debian 13.5 (trixie) | 3:3.2.17-1 | [DEBIAN-CVE-2023-23969](https://patchblox.com/security/data/fix/linux/debian-cve-2023-23969.md) | Feb 1, 2023 |
| Linux | python-django Debian 14 | 3:3.2.17-1 | [DEBIAN-CVE-2023-23969](https://patchblox.com/security/data/fix/linux/debian-cve-2023-23969.md) | Feb 1, 2023 |
| Linux | python-django Ubuntu 18.04.6 LTS (bionic) | 1:1.11.11-1ubuntu1.19 | [python-django 1:1.11.11-1ubuntu1.19](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-django-1-1.11.11-1ubuntu1.19.md) | Feb 1, 2023 |
| Linux | python-django-common Ubuntu 18.04.6 LTS (bionic) | 1:1.11.11-1ubuntu1.19 | [python-django-common 1:1.11.11-1ubuntu1.19](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-django-common-1-1.11.11-1ubuntu1.19.md) | Feb 1, 2023 |
| Linux | python3-django Ubuntu 18.04.6 LTS (bionic) | 1:1.11.11-1ubuntu1.19 | [python3-django 1:1.11.11-1ubuntu1.19](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-django-1-1.11.11-1ubuntu1.19.md) | Feb 1, 2023 |
| Linux | python3-django Ubuntu 20.04 LTS (focal) | 2:2.2.12-1ubuntu0.15 | [python3-django 2:2.2.12-1ubuntu0.15](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-django-2-2.2.12-1ubuntu0.15.md) | Feb 1, 2023 |
| Linux | python3-django Ubuntu 22.04.1 LTS (jammy) | 2:3.2.12-2ubuntu1.4 | [python3-django 2:3.2.12-2ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-django-2-3.2.12-2ubuntu1.4.md) | Feb 1, 2023 |
| Linux | python3-django Ubuntu 24.10 (oracular) | 3:3.2.16-1ubuntu2 | [python3-django 3:3.2.16-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-python3-django-3-3.2.16-1ubuntu2.md) | Jan 16, 2026 |
| Linux | python3-django Ubuntu 25.04 (plucky) | 3:3.2.16-1ubuntu2 | [python3-django 3:3.2.16-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-python3-django-3-3.2.16-1ubuntu2.md) | Jan 16, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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