{"id":"CVE-2026-44401","title":"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 unsanitiz…","summary":"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 unsanitiz…","severity":"medium","cvss":4.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-08-10","updated":"2026-09-10","sourceUpdated":"2026-09-10T20:44:57.447","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-44401","references":[{"url":"https://github.com/sn0x-sharma/CVE-2026-44401","label":"disclosure@vulncheck.com"},{"url":"https://github.com/typemill/typemill","label":"disclosure@vulncheck.com"},{"url":"https://github.com/typemill/typemill/releases/tag/v2.23.0","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/typemill-cms-2-x-persistent-xss-via-markdown-javascript-uri","label":"disclosure@vulncheck.com"}],"tags":["nvd","exploit-available"],"epss":0.00283,"epssPercentile":0.21032,"exploits":{"github":1,"githubRepos":["https://github.com/sn0x-sharma/CVE-2026-44401"],"checkedAt":"2026-09-23T07:14:05.691Z"},"exploitAvailable":true,"ingestedAt":"2026-09-10T21:05:53.595Z","slug":"CVE-2026-44401","body":"## Overview\n\nTypemill 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":38,"depthScoreParts":{"impact":26.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}