Typemill CMS 2.x Persistent XSS via Markdown javascript URI
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 4.6epss 0.3%
from disclosure to weapon1 days
Published on NVDAug 10
1st PoC+1d
exploitation probability
0.3%top 80% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L
Affected products
Typemill · Typemillpublic PoCs found — 1
githubgithub.com/sn0x-sharma/CVE-2026-44401★ 2⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.