CVEvulnerability
CVE-2025-27556
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2025-04-02
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.8 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770
Description
An issue was discovered in Django 5.1 before 5.1.8 and 5.0 before 5.0.14. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.views.LoginView, django.contrib.auth.views.LogoutView, and django.views.i18n.set_language are subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode characters.
Affected configurations
• djangoproject django (>= 5.0 < 5.0.14)
• djangoproject django (>= 5.1 < 5.1.8)
Related
Weakness · CWE (1)
- CWE-770 Allocation of Resources Without Limits or Throttling weakness
References
- https://docs.djangoproject.com/en/dev/releases/security/ Vendor Advisory
- https://groups.google.com/g/django-announce Vendor Advisory
- https://www.djangoproject.com/weblog/2025/apr/02/security-releases/ Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/04/02/2 Mailing List, Third Party Advisory