CVE-2025-32873

Name	CVE-2025-32873
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().
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1104872

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
python-django (PTS)	bullseye	2:2.2.28-1~deb11u2	vulnerable
	bullseye (security)	2:2.2.28-1~deb11u6	vulnerable
	bookworm, bookworm (security)	3:3.2.19-1+deb12u1	vulnerable
	trixie	3:4.2.20-1	vulnerable
	sid	3:4.2.21-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
python-django	source	(unstable)	3:4.2.21-1			1104872

Notes

https://www.djangoproject.com/weblog/2025/may/07/security-releases/
Fixed by: https://github.com/django/django/commit/9cd8028f3e38dca8e51c1388f474eecbe7d6ca3c (4.2.21)