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CVE-2025-64458 — Vulnerability in django — CVE Details

HIGH

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

Published November 5, 2025Updated September 10, 2026Source: osv

What Should I Do?

Address in Next Maintenance Window

Low exploitation probability (0.03%). Schedule for your next planned update.

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.

Advisory Timeline

  • First published November 5, 2025 (341 days ago).
  • Last revised September 10, 2026 — 309 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip
Update django to 5.1.14 or later
pip install "django>=5.1.14"
pip
Update django to 5.2.8 or later
pip install "django>=5.2.8"
pip
Update django to 4.2.26 or later
pip install "django>=4.2.26"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

Affects 1 ecosystem: pypi (1).

PackageEcosystemAffectedFixed In
django
pypi
5.0, 5.0.1, 5.0.10, 5.0.11 (+31 more)5.1.14
django
pypi
5.2, 5.2.1, 5.2.2, 5.2.3 (+7 more)5.2.8
django
pypi
1.0.1, 1.0.2, 1.0.3, 1.0.4 (+358 more)4.2.26

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Frequently Asked Questions

What is CVE-2025-64458?
Django has a denial-of-service vulnerability in HttpResponseRedirect and HttpResponsePermanentRedirect on Windows This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2025-64458?
CVE-2025-64458 affects django. It has a 0.03% probability of exploitation within 30 days (EPSS score). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-64458 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

EPSS Score (30-day exploit probability)
0.03%
Higher than 7% of vulnerabilities

This is a below-median EPSS score — only 6.9% of tracked vulnerabilities score at or below it, so most tracked vulnerabilities are considered more likely to be exploited than this one.

Also Known As

GHSA-qw25-v68c-qjf3
BIT-django-2025-64458
PYSEC-2025-107

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