What is CVE-2026-24127?

CVE-2026-24127 is a medium-severity vulnerability in Typemill, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-23.

How severe is CVE-2026-24127?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Typemill

CVE-2026-24127

Typemill is a flat-file, Markdown-based CMS designed for informational documentation websites. A reflected Cross-Site Scripting (XSS) exists in the login error view template `login.twig` of versions 2.19.1 and below. The `username` value can be echoed back without proper contextual encoding when authentication fails. An attacker can execute script in the login page context. This issue has been fixed in version 2.19.2.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (19.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Typemill — versions < v2.19.2

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (Product, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-24127?: CVE-2026-24127 is a medium-severity vulnerability in Typemill, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-23.
How severe is CVE-2026-24127?: Medium severity. CVSS v3 base score is 5.4 out of 10.