Description

An issue was discovered in Django 5.1 before 5.1.8 and 5.0 before 5.0.14. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.views.LoginView, django.contrib.auth.views.LogoutView, and django.views.i18n.set_language are subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode characters.

INFO

Published Date :

2025-04-02T00:00:00.000Z

Last Modified :

2025-04-02T22:03:22.423Z

Source :

mitre
AFFECTED PRODUCTS

The following products are affected by CVE-2025-27556 vulnerability.

No data.

REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-27556.

URL Resource
http://www.openwall.com/lists/oss-security/2025/04/02/2 cve-icon
https://docs.djangoproject.com/en/dev/releases/security/ cve-icon cve-icon cve-icon
https://groups.google.com/g/django-announce cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-27556 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-27556 cve-icon
https://www.djangoproject.com/weblog/2025/apr/02/security-releases/ cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact