VDB
CISA-2025-64458
CISA-2025-64458
PUBLISHED
CVSS 7.5 HIGH
Reported by DSF · Published November 5, 2025
An issue was discovered in 5.1 before 5.1.14, 4.2 before 4.2.26, and 5.2 before 5.2.8. NFKC normalization in Python is slow on Windows. As a consequence, `django.http.HttpResponseRedirect`, `django.http.HttpResponsePermanentRedirect`, and the shortcut `django.shortcuts.redirect` were subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode characters. 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 Seokchan Yoon for reporting this issue.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| djangoproject | Django | 5.2, 5.2.8, 5.1 |
| djangoproject | Django | 5.2, 5.1.14, 4.2 |
Timeline
- Nov 5, 2025 CVE Published
- Nov 5, 2025 CVE Updated
References
- Django security archive vendor-advisory
- Django releases announcements mailing-list
- Django security releases issued: 5.2.8, 5.1.14, and 4.2.26 vendor-advisory