CVE-2026-1285

Name	CVE-2026-1285
Description	An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. `django.utils.text.Truncator.chars()` and `Truncator.words()` methods (with `html=True`) and the `truncatechars_html` and `truncatewords_html` template filters allow a remote attacker to cause a potential denial-of-service via crafted inputs containing a large number of unmatched HTML end tags. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Seokchan Yoon for reporting this issue.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4484-1
Debian Bugs	1126914

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~deb11u12	fixed
	bookworm	3:3.2.19-1+deb12u1	vulnerable
	bookworm (security)	3:3.2.25-0+deb12u1	vulnerable
	trixie	3:4.2.23-1	vulnerable
	trixie (security)	3:4.2.27-0+deb13u1	vulnerable
	forky, sid	3:4.2.28-1	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	bullseye	2:2.2.28-1~deb11u12		DLA-4484-1
python-django	source	(unstable)	3:4.2.28-1			1126914

Notes

https://www.djangoproject.com/weblog/2026/feb/03/security-releases/
Fixed by: https://github.com/django/django/commit/b40cfc6052ced26dcd8166a58ea6f841d0d2cac8 (4.2.28)