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CVE-2026-1285 is an algorithmic-complexity vulnerability in Django's django.utils.text.Truncator.chars() and Truncator.words() methods when html=True, and in the truncatechars_html and truncatewords_html template filters. Crafted input containing many unmatched HTML end tags can cause quadratic-time HTML parsing, potentially allowing a remote attacker to deny service. Affected versions are Django 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. Earlier unsupported branches, including 5.0.x, 4.1.x, and 3.2.x, were not evaluated and may also be affected.
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An availability-impacting vulnerability whose CVSS vectors indicate network access, low attack complexity, and no required privileges or user interaction. No confidentiality or integrity impact is indicated. The content does not identify the affected product or underlying flaw.
A denial-of-service vulnerability in Django triggered by crafted HTML inputs.
A denial-of-service vulnerability in Django triggered by crafted HTML inputs.
A Django denial-of-service vulnerability caused by crafted HTML inputs with many unmatched HTML end tags, affecting truncation methods and template filters that process HTML.
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Cross-references every affected SKU, including bundled OEM variants.
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