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CVE

CVE-2025-64458

Django has a denial-of-service vulnerability in HttpResponseRedirect and HttpResponsePermanentRedirect on Windows
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CVE

CVE-2025-64458

Django has a denial-of-service vulnerability in HttpResponseRedirect and HttpResponsePermanentRedirect on Windows

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Related Resources

No items found.

References

https://nvd.nist.gov/vuln/detail/CVE-2025-64458, https://github.com/django/django/commit/3790593781d26168e7306b5b2f8ea0309de16242, https://github.com/django/django/commit/4f5d904b63751dea9ffc3b0e046404a7fa5881ac, https://github.com/django/django/commit/6e13348436fccf8f22982921d6a3a3e65c956a9f, https://github.com/django/django/commit/770eea38d7a0e9ba9455140b5a9a9e33618226a7, https://docs.djangoproject.com/en/dev/releases/security, https://github.com/django/django, https://groups.google.com/g/django-announce, https://www.djangoproject.com/weblog/2025/nov/05/security-releases

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00022%
EPSS Percentile
0.04967%
Introduced Version
5.2a1,5.0a1,1.5,1.3.2,1.1.3
Fix Available
5.2.8,5.1.14,4.2.26

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