id: PYSEC-2023-12
details: In Django 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, the
  parsed values of Accept-Language headers are cached in order to avoid repetitive
  parsing. This leads to a potential denial-of-service vector via excessive memory
  usage if the raw value of Accept-Language headers is very large.
affected:
- package:
    name: django
    ecosystem: PyPI
    purl: pkg:pypi/django
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "3.2"
    - fixed: 3.2.17
    - introduced: "4.0"
    - fixed: 4.0.9
    - introduced: "4.1"
    - fixed: 4.1.6
  versions:
  - "3.2"
  - 3.2.1
  - 3.2.10
  - 3.2.11
  - 3.2.12
  - 3.2.13
  - 3.2.14
  - 3.2.15
  - 3.2.16
  - 3.2.2
  - 3.2.3
  - 3.2.4
  - 3.2.5
  - 3.2.6
  - 3.2.7
  - 3.2.8
  - 3.2.9
  - "4.0"
  - 4.0.1
  - 4.0.2
  - 4.0.3
  - 4.0.4
  - 4.0.5
  - 4.0.6
  - 4.0.7
  - 4.0.8
  - "4.1"
  - 4.1.1
  - 4.1.2
  - 4.1.3
  - 4.1.4
  - 4.1.5
references:
- type: WEB
  url: https://docs.djangoproject.com/en/4.1/releases/security/
- type: ARTICLE
  url: https://www.djangoproject.com/weblog/2023/feb/01/security-releases/
- type: WEB
  url: https://groups.google.com/forum/#!forum/django-announce
- type: ADVISORY
  url: https://github.com/advisories/GHSA-q2jf-h9jm-m7p4
aliases:
- CVE-2023-23969
- GHSA-q2jf-h9jm-m7p4
modified: "2023-05-04T03:49:45.437728Z"
published: "2023-02-01T19:15:00Z"