CVE-2026-33033PYSEC-2026-48BIT-DJANGO-2026-33033GHSA-5MF9-H53Q-7MHQ
Potential denial-of-service vulnerability in MultiPartParser via base64-encoded file upload
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.0.4, 5.2.13, 4.2.30
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 1 proof of concept on GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- django
From 6.0 · fixed in 6.0.4; From 5.2 · fixed in 5.2.13; From 4.2 · fixed in 4.2.30
- djangoPyPI
From 4.2 · fixed in 4.2.30; From 5.2 · fixed in 5.2.13; From 6.0 · fixed in 6.0.4
- djangoPyPI
From 6.0 · fixed in 6.0.4
- djangoPyPI
From 5.2 · fixed in 5.2.13
- djangoPyPI
From 4.2 · fixed in 4.2.30