CVE-2026-33033
mediumpriority · track · 10EPSS 0.009 · 59 %ileexploit · PoCDEEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- ch4n3-yoon/CVE-2026-33033-PoCA PoC script for demonstrating CVE-2026-33033PoC · poc_in_github
affected products (43)
Products and version ranges known to be affected.
advisories (4)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1002Django: Mehrere SchwachstellenDeutsch2026-04-07csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Django ausnutzen, um einen Denial-of-Service-Zustand herbeizuführen, Daten zu manipulieren oder Sicherheitsmaßnahmen zu umgehen.
- GHSA-5mf9-h53q-7mhqDjango has potential DoS via MultiPartParser through crafted multipart uploads2026-04-07ghsa · osvUS
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.
- BIT-django-2026-33033Potential denial-of-service vulnerability in MultiPartParser via base64-encoded file upload2026-04-16vendor · osvUS
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.
- PYSEC-2026-482026-04-07vendor · osvUS
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.
also known as (8)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://docs.djangoproject.com/en/dev/releases/security/cnnvd
- https://groups.google.com/g/django-announcecnnvd
- https://vigilance.fr/vulnerability/Django-multiple-vulnerabilities-dated-08-04-2026-50383cnnvd
- https://www.djangoproject.com/weblog/2026/apr/07/security-releases/cnnvd
- https://docs.djangoproject.com/en/dev/releases/security/enisa_euvd
- https://groups.google.com/g/django-announceenisa_euvd
- https://www.djangoproject.com/weblog/2026/apr/07/security-releases/enisa_euvd
- https://docs.djangoproject.com/en/dev/releases/security/PatchVendor Advisorynvd
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