Reflected Cross-Site Scripting Vulnerability in MajorDoMo by MajorDoMo Inc.
CVE-2026-27176

5.1MEDIUM

Key Information:

Vendor

Sergejey

Status
Majordomo
Vendor
CVE Published:
18 February 2026

What is CVE-2026-27176?

MajorDoMo, a web-based home automation software, contains a reflected cross-site scripting (XSS) vulnerability in the command.php file. This vulnerability arises from the improper handling of the $qry parameter, which is directly rendered into the HTML output without adequate sanitization. An attacker can exploit this flaw by crafting a malicious URL that injects arbitrary JavaScript into the application. This could lead to various attacks, including the theft of sensitive user information or the execution of unauthorized actions on behalf of the user.

Affected Version(s)

MajorDoMo 0

References

https://chocapikk.com/posts/2026/majordomo-revisited/
third-party-advisory
https://github.com/sergejey/majordomo/pull/1177
patch
https://www.vulncheck.com/advisories/majordomo-reflected-...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Valentin Lobstein
.