CVE-2026-44401 — Typemill CMS 2.x Persistent XSS via Markdown javascript URI
Typemill CMS version 2.x contains a persistent cross-site scripting vulnerability in the Markdown parser extension that allows authenticated users with theme-configuration acces…
Published: 2026-08-10 · CVSS: 4.6 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7