GitHub Advisoryadvisory · PyPI
GHSA-33mw-q7rj-mjwj Django has Inefficient Algorithmic Complexity
LOW
Official page ↗
- Aliases
- CVE-2025-14550
- Ecosystem
- PyPI
- Packages
- Django
- Severity
- Low
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
- Weaknesses
- CWE-407
- Reviewed
- 2026-02-03
Affected packages
• PyPI Django: >= 6.0a1, < 6.0.2 → fixed in 6.0.2
• PyPI Django: >= 5.2a1, < 5.2.11 → fixed in 5.2.11
• PyPI Django: >= 4.2a1, < 4.2.28 → fixed in 4.2.28
Description
An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28.
`ASGIRequest` allows a remote attacker to cause a potential denial-of-service via a crafted request with multiple duplicate headers.
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 Jiyong Yang for reporting this issue.
Related
Alias · CVE (1)
- CVE-2025-14550 An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. vulnerability
Weakness · CWE (1)
- CWE-407 Inefficient Algorithmic Complexity weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-14550 advisory
- https://github.com/django/django/commit/eb22e1d6d643360e952609ef562c139a100ea4eb web
- 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-2026-43.yaml web
- https://groups.google.com/g/django-announce web
- https://www.djangoproject.com/weblog/2026/feb/03/security-releases web