CVE-2026-53468: Typemill

Medium severity, CVSS 4.6. EPSS: 0.2% chance of exploitation in the next 30 days.

Typemill is a flat-file, Markdown-based content management system designed for informational documentation websites. Versions prior to 2.23.0 are vulnerable to stored HTML attribute injection in the page metadata fields (`og:title` and `og:description`). An authenticated user with permission to modify page metadata can inject arbitrary HTML attributes into generated `<meta>` tags due to missing output encoding. Under certain browser or DOM interaction scenarios, this may lead to stored cross-site scripting (XSS). Version 2.23.0 fixes the issue.

Affected products

• Typemill Typemill: before 2.23.0 (fixed in 2.23.0)

Published 2026-08-21. Last modified 2026-09-09.