Vulnerability advisory

PYSEC-2023-222

Published Nov 2, 2023Updated Jun 10, 2026OSV record ↗

Also known as BIT-django-2023-46695CVE-2023-46695GHSA-qmf9-6jqf-j8fq

Severity

Severity not reported.

Affected versions

django PyPI

Affected	Fixed in
`3.2` to before 3.2.23	`3.2.23`Advisories →
`4.1` to before 4.1.13	`4.1.13`Advisories →
`4.2` to before 4.2.7	`4.2.7`Advisories →
Also listed as affected (43) `3.2` `3.2.1` `3.2.10` `3.2.11` `3.2.12` `3.2.13` `3.2.14` `3.2.15` `3.2.16` `3.2.17` `3.2.18` `3.2.19` `3.2.2` `3.2.20` `3.2.21` `3.2.22` `3.2.3` `3.2.4` `3.2.5` `3.2.6` `3.2.7` `3.2.8` `3.2.9` `4.1` `4.1.1` `4.1.10` `4.1.11` `4.1.12` `4.1.2` `4.1.3` `4.1.4` `4.1.5` `4.1.6` `4.1.7` `4.1.8` `4.1.9` `4.2` `4.2.1` `4.2.2` `4.2.3` `4.2.4` `4.2.5` `4.2.6`

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.

PYSEC-2023-222

Affected versions

django PyPI

Description

References