Vulnerability advisory

PYSEC-2025-37

Published May 8, 2025Updated Jun 10, 2026OSV record ↗

Also known as BIT-django-2025-32873CVE-2025-32873GHSA-8j24-cjrq-gr2m

Severity

Severity not reported.

Affected versions

django PyPI

Affected	Fixed in
`4.2` to before 4.2.21	`4.2.21`Advisories →
`5.1` to before 5.1.9	`5.1.9`Advisories →
`5.2` to before 5.2.1	`5.2.1`Advisories →
Also listed as affected (31) `4.2` `4.2.1` `4.2.10` `4.2.11` `4.2.12` `4.2.13` `4.2.14` `4.2.15` `4.2.16` `4.2.17` `4.2.18` `4.2.19` `4.2.2` `4.2.20` `4.2.3` `4.2.4` `4.2.5` `4.2.6` `4.2.7` `4.2.8` `4.2.9` `5.1` `5.1.1` `5.1.2` `5.1.3` `5.1.4` `5.1.5` `5.1.6` `5.1.7` `5.1.8` `5.2`

Description

An issue was discovered in Django 4.2 before 4.2.21, 5.1 before 5.1.9, and 5.2 before 5.2.1. The django.utils.html.strip_tags() function is vulnerable to a potential denial-of-service (slow performance) when processing inputs containing large sequences of incomplete HTML tags. The template filter striptags is also vulnerable, because it is built on top of strip_tags().

PYSEC-2025-37

Affected versions

django PyPI

Description

References