CVE-2026-44401Typemill CMS 2.x Persistent XSS via Markdown javascript URI
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Aug 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Typemill Typemill typemill:typemill (from the name) | from 2.0.0 through 2.23.0 | CNA record |
References
- https://github.com/typemill/typemillproduct
- https://github.com/typemill/typemill/releases/tag/v2.23.0patch
- https://www.vulncheck.com/advisories/typemill-cms-2-x-persistent-xss-via-markdown-javascript-urithird-party-advisory
- https://github.com/sn0x-sharma/CVE-2026-44401technical-description
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.