Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- djangoproject / Django5.2 – 5.2.8
- djangoproject / Django5.2.8 – 5.2.8
- djangoproject / Django5.1 – 5.1.14
- djangoproject / Django5.1.14 – 5.1.14
- djangoproject / Django4.2 – 4.2.26
- djangoproject / Django4.2.26 – 4.2.26
Updated 17m ago · 8 sources