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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-33033

Potential denial-of-service vulnerability in MultiPartParser via base64-encoded file upload

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

djangoproject Django

Default version status: unaffected

  • 6.0 to < 6.0.4affected
  • 6.0.4unaffected
  • 5.2 to < 5.2.13affected
  • 5.2.13unaffected
  • 4.2 to < 4.2.30affected
  • 4.2.30unaffected

References