affected:
- package:
    ecosystem: PyPI
    name: django
    purl: pkg:pypi/django
  ranges:
  - events:
    - introduced: '4.2'
    - fixed: 4.2.30
    - introduced: '5.2'
    - fixed: 5.2.13
    - introduced: '6.0'
    - fixed: 6.0.4
    type: ECOSYSTEM
  versions:
  - '4.2'
  - 4.2.1
  - 4.2.10
  - 4.2.11
  - 4.2.12
  - 4.2.13
  - 4.2.14
  - 4.2.15
  - 4.2.16
  - 4.2.17
  - 4.2.18
  - 4.2.19
  - 4.2.2
  - 4.2.20
  - 4.2.21
  - 4.2.22
  - 4.2.23
  - 4.2.24
  - 4.2.25
  - 4.2.26
  - 4.2.27
  - 4.2.28
  - 4.2.29
  - 4.2.3
  - 4.2.4
  - 4.2.5
  - 4.2.6
  - 4.2.7
  - 4.2.8
  - 4.2.9
  - '5.2'
  - 5.2.1
  - 5.2.10
  - 5.2.11
  - 5.2.12
  - 5.2.2
  - 5.2.3
  - 5.2.4
  - 5.2.5
  - 5.2.6
  - 5.2.7
  - 5.2.8
  - 5.2.9
  - '6.0'
  - 6.0.1
  - 6.0.2
  - 6.0.3
aliases:
- CVE-2026-33033
- GHSA-5mf9-h53q-7mhq
details: |-
  An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30.
  `MultiPartParser` allows remote attackers to degrade performance by submitting multipart uploads with `Content-Transfer-Encoding: base64` including excessive whitespace.
  Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.
  Django would like to thank Seokchan Yoon for reporting this issue.
id: PYSEC-2026-48
modified: '2026-05-20T09:18:58.648908Z'
published: '2026-04-07T15:17:39.220Z'
references:
- type: ADVISORY
  url: https://groups.google.com/g/django-announce
- type: FIX
  url: https://docs.djangoproject.com/en/dev/releases/security/
- type: FIX
  url: https://www.djangoproject.com/weblog/2026/apr/07/security-releases/
- type: ADVISORY
  url: https://github.com/advisories/GHSA-5mf9-h53q-7mhq
severity:
- score: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  type: CVSS_V3