GitHub Advisoryadvisory · PyPI

GHSA-5mf9-h53q-7mhq Django has potential DoS via MultiPartParser through crafted multipart uploads

MEDIUM Published 2026-04-07 Modified 2026-06-05 Official page ↗
Aliases
CVE-2026-33033
Ecosystem
PyPI
Packages
Django
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-407
Reviewed
2026-04-08

Affected packages

• PyPI Django: >= 6.0, < 6.0.4 → fixed in 6.0.4 • PyPI Django: >= 5.2, < 5.2.13 → fixed in 5.2.13 • PyPI Django: >= 4.2, < 4.2.30 → fixed in 4.2.30

Description

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.

Related

Alias · CVE (1)

  • CVE-2026-33033 An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. vulnerability

Weakness · CWE (1)

  • CWE-407 Inefficient Algorithmic Complexity weakness

References