GHSA-8vfw-vh7q-p649MediumCVSS 4.8
Typemill CMS version 2.x contains a persistent cross-site scripting vulnerability in the Markdown...
🔗 CVE IDs covered (1)
📋 Description
Typemill CMS version 2.x contains a persistent cross-site scripting vulnerability in the Markdown parser extension that allows authenticated users with theme-configuration access to inject malicious JavaScript URIs by supplying unsanitized href values in Markdown links. Attackers can craft Markdown links using the javascript: scheme through ParsedownExtension.php or TwigMarkdownExtension.php, storing a persistent payload that executes in the browser of every visitor who clicks the link, enabling session cookie theft, authenticated request forgery, and credential harvesting.
🔗 References (7)
- https://nvd.nist.gov/vuln/detail/CVE-2026-44401
- https://github.com/typemill/typemill
- https://github.com/typemill/typemill/releases/tag/2.23.0
- https://www.vulncheck.com/advisories/typemill-cms-2-x-persistent-xss-via-markdown-javascript-uri
- https://github.com/sn0x-sharma/CVE-2026-44401
- https://github.com/typemill/typemill/releases/tag/v2.23.0
- https://github.com/advisories/GHSA-8vfw-vh7q-p649