CVE 5.3 MEDIUM

Potential denial-of-service vulnerability in ASGI requests via file upload limit bypass_CVE-2026-5766

5.3 / 10
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Description

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14.
ASGI requests with a missing or understated `Content-Length` header can bypass the `FILE_UPLOAD_MAX_MEMORY_SIZE` limit, potentially loading large files into memory and causing service degradation.

As a reminder, Django expects a limit to be configured at the web server level rather than solely relying on `FILE_UPLOAD_MAX_MEMORY_SIZE`.
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 Kyle Agronick for reporting this issue.

Basic Information

ID CVE-2026-5766
Source DSF
Published May 5, 2026 at 14:49

Affected Product

Vendor djangoproject
Product Django
Version 6.0
Affected Versions djangoproject Django 6.0
djangoproject Django 5.2

CWE Classification

References

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