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.
History

Tue, 07 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 07 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
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.
Title Potential denial-of-service vulnerability in MultiPartParser via base64-encoded file upload
Weaknesses CWE-407
References

cve-icon MITRE

Status: PUBLISHED

Assigner: DSF

Published: 2026-04-07T14:22:48.624Z

Updated: 2026-04-07T15:21:27.926Z

Reserved: 2026-03-17T17:36:23.992Z

Link: CVE-2026-33033

cve-icon Vulnrichment

Updated: 2026-04-07T15:21:23.777Z

cve-icon NVD

Status : Received

Published: 2026-04-07T15:17:39.220

Modified: 2026-04-07T16:16:24.490

Link: CVE-2026-33033

cve-icon Redhat

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