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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-1285
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-1285.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 3:3.2.25-0+deb12u2 |
| debian | bullseye | fixed | 2:2.2.28-1~deb11u12 |
| debian | forky | fixed | 3:4.2.28-1 |
| debian | sid | fixed | 3:4.2.28-1 |
| debian | trixie | fixed | 3:4.2.28-0+deb13u1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-1285
- https://github.com/django/django/commit/a33540b3e20b5d759aa8b2e4b9ca0e8edd285344
- https://docs.djangoproject.com/en/dev/releases/security
- https://github.com/django/django
- https://groups.google.com/g/django-announce
- https://www.djangoproject.com/weblog/2026/feb/03/security-releases
- https://docs.djangoproject.com/en/dev/releases/security/
- https://www.djangoproject.com/weblog/2026/feb/03/security-releases/
- https://www.suse.com/security/cve/CVE-2026-1285.html
- https://security-tracker.debian.org/tracker/CVE-2026-1285
Verify integrity in audit chain (admin only). AS-IS.