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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-5766

Potential denial-of-service vulnerability in ASGI requests via file upload limit bypass

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

djangoproject Django

Default version status: unaffected

  • 6.0 to < 6.0.5affected
  • 6.0.5unaffected
  • 5.2 to < 5.2.14affected
  • 5.2.14unaffected

References