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CVE-2026-27178— MajorDoMo Stored Cross-Site Scripting via Method Parameters to Shoutbox

Quick assessment

Affected
sergejey MajorDoMo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MajorDoMo是MajorDoMo社区的一个开源DIY智能家居自动化平台。 MajorDoMo存在跨站脚本漏洞，该漏洞源于通过/objects/?method=端点允许未经验证地执行存储的方法，并将攻击者控制的参数直接传递给say()函数，该函数将消息未经转义存储在shouts数据库表中，而shoutbox小部件在PHP渲染代码和HTML模板中未经清理渲染存储的消息，可能导致存储型跨站脚本攻击和会话劫持。

CVSS 7.2 · High EPSS 0.41% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
sergejey MajorDoMo ≤ * affected
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I. Basic Information for CVE-2026-27178

Vulnerability Information
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Vulnerability Title
MajorDoMo Stored Cross-Site Scripting via Method Parameters to Shoutbox
Source: CVE Program / CVE List V5
Vulnerability Description
MajorDoMo (aka Major Domestic Module) contains a stored cross-site scripting (XSS) vulnerability through method parameter injection into the shoutbox. The /objects/?method= endpoint allows unauthenticated execution of stored methods with attacker-controlled parameters. Default methods such as ThisComputer.VolumeLevelChanged pass the user-supplied VALUE parameter directly into the say() function, which stores the message raw in the shouts database table without escaping. The shoutbox widget renders stored messages without sanitization in both PHP rendering code and HTML templates. Because the dashboard widget auto-refreshes every 3 seconds, the injected script executes automatically when any administrator loads the dashboard, enabling session hijack through cookie exfiltration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
MajorDoMo 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MajorDoMo是MajorDoMo社区的一个开源DIY智能家居自动化平台。 MajorDoMo存在跨站脚本漏洞，该漏洞源于通过/objects/?method=端点允许未经验证地执行存储的方法，并将攻击者控制的参数直接传递给say()函数，该函数将消息未经转义存储在shouts数据库表中，而shoutbox小部件在PHP渲染代码和HTML模板中未经清理渲染存储的消息，可能导致存储型跨站脚本攻击和会话劫持。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
sergejey MajorDoMo 0 ~ * -

II. Public POCs for CVE-2026-27178

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III. Intelligence Information for CVE-2026-27178

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Patches & Fixes for CVE-2026-27178 (1)

Vendor Advisories for CVE-2026-27178 (1)

Security Blog Posts for CVE-2026-27178 (1)

Same Patch Batch · sergejey · 2026-02-18 · 8 CVEs total

CVE-2026-27180 9.8 CRITICAL MajorDoMo Supply Chain Remote Code Execution via Update URL Poisoning
CVE-2026-27175 9.8 CRITICAL MajorDoMo Command Injection in rc/index.php via Race Condition
CVE-2026-27174 9.8 CRITICAL MajorDoMo Unauthenticated Remote Code Execution via Admin Console Eval
CVE-2026-27179 8.2 HIGH MajorDoMo Unauthenticated SQL Injection in Commands Module
CVE-2026-27181 7.5 HIGH MajorDoMo Unauthenticated Module Uninstall via Market Endpoint
CVE-2026-27177 7.2 HIGH MajorDoMo Stored Cross-Site Scripting via Property Set Endpoint
CVE-2026-27176 6.1 MEDIUM MajorDoMo Reflected Cross-Site Scripting in command.php

IV. Related Vulnerabilities

Same product: MajorDoMo
Same vendor: sergejey
Same weakness: CWE-79

V. Comments for CVE-2026-27178

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