What is CVE-2026-53468?

CVE-2026-53468 is a medium-severity vulnerability in Typemill, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-08-21.

How severe is CVE-2026-53468?

Medium severity. CVSS v3 base score is 4.6 out of 10.

XSS in Typemill

CVE-2026-53468

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.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Typemill — versions < 2.23.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-53468?: CVE-2026-53468 is a medium-severity vulnerability in Typemill, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-08-21.
How severe is CVE-2026-53468?: Medium severity. CVSS v3 base score is 4.6 out of 10.