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GHSA-4rrr-2h4v-f3j9

Django has Inefficient Algorithmic Complexity

Source: GitHub Advisory Database (reviewed) Low CVE-2026-1285

Packages

EcosystemPackageAffectedFixed in
PyPI Django >= 6.0a1, < 6.0.2 6.0.2
PyPI Django >= 5.2a1, < 5.2.11 5.2.11
PyPI Django >= 4.2a1, < 4.2.28 4.2.28

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.