CVE-2025-64458Potential denial-of-service vulnerability in HttpResponseRedirect and HttpResponsePermanentRedirect on Windows
Updated under an hour ago ()
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It affects djangoproject Django. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-407
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- DSF
- NVD analysis
- Analyzed
- Record last updated
- Nov 5, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
djangoproject Django djangoproject:django (from the name) | from 5.2 before 5.2.8; 5.2.8 not affected; from 5.1 before 5.1.14; 5.1.14 not affected; from 4.2 before 4.2.26; 4.2.26 not affected | CNA record |
djangoproject django djangoproject:django | from 4.2 before 4.2.26; from 5.1 before 5.1.14; from 5.2 before 5.2.8 | NVD |
References
- https://docs.djangoproject.com/en/dev/releases/security/vendor-advisory
- https://groups.google.com/g/django-announcemailing-list
- https://www.djangoproject.com/weblog/2025/nov/05/security-releases/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.