CVE-2025-64458 Affecting py3-django package, versions <4.2.26-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.02% (3rd percentile)

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  • Snyk IDSNYK-ALPINE322-PY3DJANGO-13961436
  • published14 Nov 2025
  • disclosed5 Nov 2025

Introduced: 5 Nov 2025

NewCVE-2025-64458  (opens in a new tab)

How to fix?

Upgrade Alpine:3.22 py3-django to version 4.2.26-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream py3-django package and not the py3-django package as distributed by Alpine. See How to fix? for Alpine:3.22 relevant fixed versions and status.

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 Base Scores

version 3.1