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

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

https://cvefeed.io/rssfeed/latest.atom / Sun, 08/23/2026 - 16:27
CVE ID :CVE-2026-8445
Published : Aug. 23, 2026, 1:34 p.m. | 53 minutes ago
Description :justhtml versions <= 1.11.0 (fixed in 1.12.0) do not sufficiently escape HTML-significant characters (angle brackets) in text nodes when converting a parsed document to Markdown via to_markdown(). While a small set of Markdown metacharacters are escaped, characters such as < and > 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 /><strong>Severity:</strong> 9.8 | CRITICAL <br /> Visit the link for more details, such as CVSS details, affected products, timeline, and more... </plaintext></noscript></textarea>

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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.