GitHub Advisoryadvisory · PyPI
GHSA-w26r-rmm8-9c29 Django has an Improper Handling of Length Parameter Inconsistency
MEDIUM
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
- https://nvd.nist.gov/vuln/detail/CVE-2026-5766 advisory
- https://docs.djangoproject.com/en/dev/releases/security web
- https://github.com/django/django package
- https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-54.yaml web
- https://groups.google.com/g/django-announce web
- https://www.djangoproject.com/weblog/2026/may/05/security-releases web