Vulnerability advisory

PYSEC-2023-225

Published Nov 3, 2023Updated Jun 10, 2026OSV record ↗

Also known as BIT-django-2023-41164CVE-2023-41164GHSA-7h4p-27mh-hmrw

Severity

Severity not reported.

Affected versions

django PyPI

Affected	Fixed in
`3.2` to before 3.2.21	`3.2.21`Advisories →
`4.1` to before 4.1.11	`4.1.11`Advisories →
`4.2` to before 4.2.5	`4.2.5`Advisories →
Also listed as affected (37) `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` `3.2.3` `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` `4.1.2` `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`

Description

In Django 3.2 before 3.2.21, 4.1 before 4.1.11, and 4.2 before 4.2.5, django.utils.encoding.uri_to_iri() is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.

References

ARTICLEwww.djangoproject.com/weblog/2023/sep/04/security-releases/ ↗
Webdocs.djangoproject.com/en/4.2/releases/security/ ↗
Webgroups.google.com/forum/#!forum/django-announce ↗
Advisorygithub.com/advisories/GHSA-7h4p-27mh-hmrw ↗