CVE-2023-46695
highpriority · attend · 47EPSS 0.498 · 99 %ileDEEURUUSEPSS · scored 2026-10-27
An issue was discovered in Django 3.2 before 3.2.23, 4.1 before 4.1.13, and 4.2 before 4.2.7. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.forms.UsernameField is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (22)
Products and version ranges known to be affected.
advisories (4)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2023-2791Django: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-10-31csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Django ausnutzen, um einen Denial of Service Angriff durchzuführen.
- GHSA-qmf9-6jqf-j8fqDjango potential denial of service vulnerability in UsernameField on Windows2023-11-02ghsa · osvUS
An issue was discovered in Django 3.2 before 3.2.23, 4.1 before 4.1.13, and 4.2 before 4.2.7. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.forms.UsernameField is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.
- BIT-django-2023-466952024-03-06vendor · osvUS
An issue was discovered in Django 3.2 before 3.2.23, 4.1 before 4.1.13, and 4.2 before 4.2.7. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.forms.UsernameField is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.
- PYSEC-2023-2222023-11-02vendor · osvUS
An issue was discovered in Django 3.2 before 3.2.23, 4.1 before 4.1.13, and 4.2 before 4.2.7. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.forms.UsernameField is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.
also known as (8)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (13)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2023-46695cnnvd
- https://cxsecurity.com/cveshow/CVE-2023-46695/cnnvd
- https://docs.djangoproject.com/en/4.2/releases/security/cnnvd
- https://groups.google.com/forum/#!forum/django-announcecnnvd
- https://www.djangoproject.com/weblog/2023/nov/01/security-releases/cnnvd
- https://docs.djangoproject.com/en/4.2/releases/security/enisa_euvd
- https://groups.google.com/forum/#%21forum/django-announceenisa_euvd
- https://security.netapp.com/advisory/ntap-20231214-0001/enisa_euvd
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