Vulnerability advisory

PYSEC-2026-45

Published Feb 3, 2026Updated Jun 10, 2026OSV record ↗

Also known as BIT-django-2026-1285CVE-2026-1285GHSA-4rrr-2h4v-f3j9

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected versions

django PyPI

Affected	Fixed in
`4.2` to before 4.2.28	`4.2.28`Advisories →
`5.2` to before 5.2.11	`5.2.11`Advisories →
`6.0` to before 6.0.2	`6.0.2`Advisories →
Also listed as affected (41) `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` `4.2.21` `4.2.22` `4.2.23` `4.2.24` `4.2.25` `4.2.26` `4.2.27` `4.2.3` `4.2.4` `4.2.5` `4.2.6` `4.2.7` `4.2.8` `4.2.9` `5.2` `5.2.1` `5.2.10` `5.2.2` `5.2.3` `5.2.4` `5.2.5` `5.2.6` `5.2.7` `5.2.8` `5.2.9` `6.0` `6.0.1`

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.

PYSEC-2026-45

Affected versions

django PyPI

Description

References