`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.
Project Subscriptions
No data.
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-4rrr-2h4v-f3j9 | Django has Inefficient Algorithmic Complexity |
Ubuntu USN |
USN-8009-1 | Django vulnerabilities |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Tue, 03 Feb 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
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Tue, 03 Feb 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Potential denial-of-service vulnerability in django.utils.text.Truncator HTML methods | |
| Weaknesses | CWE-407 | |
| References |
|
Projects
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Status: PUBLISHED
Assigner: DSF
Published:
Updated: 2026-02-03T16:22:33.352Z
Reserved: 2026-01-21T12:49:21.258Z
Link: CVE-2026-1285
Updated: 2026-02-03T16:22:24.499Z
Status : Undergoing Analysis
Published: 2026-02-03T15:16:13.570
Modified: 2026-02-03T17:15:59.530
Link: CVE-2026-1285
No data.
OpenCVE Enrichment
No data.
Github GHSA
Ubuntu USN