CVE-2026-33033
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Django
PublishedApr 7, 2026
First seenApr 7, 2026
Weakness typeCWE-407CWE-407
How to fix
Update
- djangoproject django4.2.30, 5.2.13, 6.0.4 or later
- django6.0.4, 5.2.13, 4.2.30 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| djangoproject django | 4.2 ≤ v < 4.2.30, 5.2 ≤ v < 5.2.13, 6.0 ≤ v < 6.0.4 | 4.2.30, 5.2.13, 6.0.4 |
| djangoPyPI | 6.0 ≤ v < 6.0.4, 5.2 ≤ v < 5.2.13, 4.2 ≤ v < 4.2.30 | 6.0.4, 5.2.13, 4.2.30 |
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