What is CVE-2026-27176?

CVE-2026-27176 is a medium-severity vulnerability in Sergejey Majordomo, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-18.

How severe is CVE-2026-27176?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Sergejey Majordomo

CVE-2026-27176

MajorDoMo (aka Major Domestic Module) contains a reflected cross-site scripting (XSS) vulnerability in command.php. The $qry parameter is rendered directly into the HTML page without sanitization via htmlspecialchars(), both in an input fi…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (26.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Sergejey Majordomo — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

MajorDoMo Revisited: What I Missed in 2023 (third-party-advisory)
Fix PR: sergejey/majordomo#1177 (patch)
VulnCheck Advisory: MajorDoMo Reflected Cross-Site Scripting in command.php (third-party-advisory)

Frequently asked questions

What is CVE-2026-27176?: CVE-2026-27176 is a medium-severity vulnerability in Sergejey Majordomo, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-18.
How severe is CVE-2026-27176?: Medium severity. CVSS v3 base score is 6.1 out of 10.