CVE-2023-46695
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 53.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 53.45% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- djangoproject/django
- Source
- cve@mitre.org
EPSS moved from 53.4% on 2 November 2026 to 53.4% on 3 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://docs.djangoproject.com/en/4.2/releases/security/Patch
- https://groups.google.com/forum/#%21forum/django-announcePermissions Required
- https://security.netapp.com/advisory/ntap-20231214-0001/
- https://www.djangoproject.com/weblog/2023/nov/01/security-releases/Patch, Vendor Advisory
- https://docs.djangoproject.com/en/4.2/releases/security/Patch
- https://groups.google.com/forum/#%21forum/django-announcePermissions Required
- https://security.netapp.com/advisory/ntap-20231214-0001/
- https://www.djangoproject.com/weblog/2023/nov/01/security-releases/Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.