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CVE-2026-8445 – justhtml before 1.12.0 Sanitizer Bypass via Markdown

Posted on August 24, 2026
CVE ID :CVE-2026-8445

Published : Aug. 23, 2026, 2:16 p.m. | 10 hours, 17 minutes ago

Description :justhtml versions are preserved, so untrusted input that is safe in to_html() — including entity-decoded text (e.g. <script>) or text from RCDATA/RAWTEXT-parsed elements like , <textarea>, <noscript>, and <plaintext> — can be emitted as raw HTML in the Markdown output, enabling a sanitizer bypass and potential cross-site scripting when that output is rendered.<br /> <br /> <strong>Severity:</strong> 9.8 | CRITICAL<br /> <br /> Visit the link for more details, such as CVSS details, affected products, timeline, and more…</plaintext></noscript></textarea>

Post Views: 12

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