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CVE-2026-27177— MajorDoMo Stored Cross-Site Scripting via Property Set Endpoint

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/?op=set端点存储的用户提供的属性值未经清理原始存储在数据库中，当管理员在管理面板中查看属性编辑器时，存储的值在段落标签和textarea元素中未经转义渲染，可能导致存储型跨站脚本攻击和会话劫持。

CVSS 7.2 · High EPSS 0.36% · P28

Affected Version Matrix 1

VendorProduct Version RangeStatus
sergejey MajorDoMo ≤ * affected
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I. Basic Information for CVE-2026-27177

Vulnerability Information
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Vulnerability Title
MajorDoMo Stored Cross-Site Scripting via Property Set Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
MajorDoMo (aka Major Domestic Module) contains a stored cross-site scripting (XSS) vulnerability via the /objects/?op=set endpoint, which is intentionally unauthenticated for IoT device integration. User-supplied property values are stored raw in the database without sanitization. When an administrator views the property editor in the admin panel, the stored values are rendered without escaping in both a paragraph tag (SOURCE field) and a textarea element (VALUE field). The XSS fires on page load without requiring any click from the admin. Additionally, the session cookie lacks the HttpOnly flag, enabling session hijack via document.cookie exfiltration. An attacker can enumerate properties via the unauthenticated /api.php/data/ endpoint and poison any property with malicious JavaScript.
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/?op=set端点存储的用户提供的属性值未经清理原始存储在数据库中，当管理员在管理面板中查看属性编辑器时，存储的值在段落标签和textarea元素中未经转义渲染，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-2026-27177

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III. Intelligence Information for CVE-2026-27177

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Patches & Fixes for CVE-2026-27177 (1)

Security Blog Posts for CVE-2026-27177 (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-2026-27178 7.2 HIGH MajorDoMo Stored Cross-Site Scripting via Method Parameters to Shoutbox
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-2026-27177

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