GitHub Advisoryadvisory · PyPI

GHSA-w26r-rmm8-9c29 Django has an Improper Handling of Length Parameter Inconsistency

MEDIUM Published 2026-05-05 Modified 2026-06-06 Official page ↗
Aliases
CVE-2026-5766
Ecosystem
PyPI
Packages
Django
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-130
Reviewed
2026-05-08

Affected packages

• PyPI Django: >= 6.0, < 6.0.5 → fixed in 6.0.5 • PyPI Django: >= 5.2, < 5.2.14 → fixed in 5.2.14

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 thanks Kyle Agronick for reporting this issue.

Related

Alias · CVE (1)

  • CVE-2026-5766 An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14. vulnerability

Weakness · CWE (1)

  • CWE-130 Improper Handling of Length Parameter Inconsistency weakness

References