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Status published
Medium
CVE-2025-27556
An issue was discovered in Django 5.1 before 5.1.8 and...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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High
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Affected Vendor
djangoproject
View all reports →Affected Software
Django
Vulnerable Versions:
5.0, 5.1
Timeline
Official Publish:
April 2nd, 2025
Last Modified:
April 2nd, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L