CVE-2026-33034

CVE-2026-33034: Potential denial-of-service vulnerability in ASGI requests via memory upload limit bypass

Vendor Djangoproject
Product Django
Weakness CWE-770 · Uncontrolled resource consumption
Published April 7, 2026
Last update April 7, 2026

CVSS base score

What the vulnerability does

01Description

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGI requests with a missing or understated `Content-Length` header could bypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit when reading `HttpRequest.body`, allowing remote attackers to load an unbounded request body into memory. 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 Superior for reporting this issue.

Key dates

02Disclosure timeline

April 7, 2026 CVE published
April 7, 2026 Record updated