medium6.5
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.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | Django | >= 6.0, < 6.0.4 | 6.0.4 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Djangoproject | Django | from 4.2 before 4.2.30 from 5.2 before 5.2.13 from 6.0 before 6.0.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://docs.djangoproject.com/en/dev/releases/security/
- https://groups.google.com/g/django-announce
- https://www.djangoproject.com/weblog/2026/apr/07/security-releases/
- https://github.com/advisories/GHSA-5mf9-h53q-7mhq
- https://nvd.nist.gov/vuln/detail/CVE-2026-33033
- https://docs.djangoproject.com/en/dev/releases/security
- https://www.djangoproject.com/weblog/2026/apr/07/security-releases
- https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-48.yaml