CVE-2025-27556
April 02, 2025
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.
Affected Packages
django (CONDA):
Affected version(s) >=5.0 <5.0.14Fix Suggestion:
Update to version 5.0.14django (CONDA):
Affected version(s) >=5.1 <5.1.8Fix Suggestion:
Update to version 5.1.8https://github.com/django/django.git (GITHUB):
Affected version(s) >=5.0 <5.0.14Fix Suggestion:
Update to version 5.0.14https://github.com/django/django.git (GITHUB):
Affected version(s) >=5.1 <5.1.8Fix Suggestion:
Update to version 5.1.8Django (PYTHON):
Affected version(s) Fix Suggestion:
Update to version 5.1.8django (PYTHON):
Affected version(s) >=5.0 <5.0.14Fix Suggestion:
Update to version 5.0.14django (PYTHON):
Affected version(s) >=5.1 <5.1.8Fix Suggestion:
Update to version 5.1.8Django (PYTHON):
Affected version(s) Fix Suggestion:
Update to version 5.0.14Related Resources (13)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
LOW
CVSS v3
Base Score:
5.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
EPSS
Base Score:
0.17
