PT-2025-45762 · Pypi · Django

Published 2025-11-05 · Updated 2025-11-05

OSV

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Fix

Weakness Enumeration

CWE-407

Related Identifiers

GHSA-QW25-V68C-QJF3

Affected Products

Django

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2025-64458 · Security Note
• https://osv.dev/vulnerability/GHSA-qw25-v68c-qjf3 · Vendor Advisory
• https://github.com/django/django · Note
• https://github.com/django/django/commit/3790593781d26168e7306b5b2f8ea0309de16242 · Note
• https://github.com/django/django/commit/770eea38d7a0e9ba9455140b5a9a9e33618226a7 · Note
• https://github.com/django/django/commit/4f5d904b63751dea9ffc3b0e046404a7fa5881ac · Note
• https://github.com/django/django/commit/6e13348436fccf8f22982921d6a3a3e65c956a9f · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2025-107.yaml · Note
• https://groups.google.com/g/django-announce · Note
• https://djangoproject.com/weblog/2025/nov/05/security-releases · Note
• https://docs.djangoproject.com/en/dev/releases/security · Note