cvedb.io
CVE-2025-64458
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2025-11-05T15:15:40.940 · Last modified 2026-06-17T09:54:24.323

Summary

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.

Affected products

djangoproject — django

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.