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CVE-2026-27180— MajorDoMo Supply Chain Remote Code Execution via Update URL Poisoning

Quick assessment

Affected
sergejey MajorDoMo
Exploitation
Public or AI PoC available; prioritize validation
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存在安全漏洞，该漏洞源于saverestore模块通过/objects/?module=saverestore端点公开其admin()方法而无需身份验证，攻击者可毒化系统更新URL，然后触发force_update处理程序来启动更新链，该方法从攻击者控制的URL获取Atom源，下载tarball，提取并复制所有提取的文件到文档根目录，可能导致远程代码执行。

CVSS 9.8 · Critical EPSS 1.15% · P66

Public Exploits 1

Metasploit · 1 majordomo_supply_chain_rce.rb [exploit]

Affected Version Matrix 1

VendorProduct Version RangeStatus
sergejey MajorDoMo ≤ * affected
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I. Basic Information for CVE-2026-27180

Vulnerability Information
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Vulnerability Title
MajorDoMo Supply Chain Remote Code Execution via Update URL Poisoning
Source: CVE Program / CVE List V5
Vulnerability Description
MajorDoMo (aka Major Domestic Module) is vulnerable to unauthenticated remote code execution through supply chain compromise via update URL poisoning. The saverestore module exposes its admin() method through the /objects/?module=saverestore endpoint without authentication because it uses gr('mode') (which reads directly from $_REQUEST) instead of the framework's $this->mode. An attacker can poison the system update URL via the auto_update_settings mode handler, then trigger the force_update handler to initiate the update chain. The autoUpdateSystem() method fetches an Atom feed from the attacker-controlled URL with trivial validation, downloads a tarball via curl with TLS verification disabled (CURLOPT_SSL_VERIFYPEER set to FALSE), extracts it using exec('tar xzvf ...'), and copies all extracted files to the document root using copyTree(). This allows an attacker to deploy arbitrary PHP files, including webshells, to the webroot with two GET requests.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
下载代码缺少完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
MajorDoMo 安全漏洞
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存在安全漏洞，该漏洞源于saverestore模块通过/objects/?module=saverestore端点公开其admin()方法而无需身份验证，攻击者可毒化系统更新URL，然后触发force_update处理程序来启动更新链，该方法从攻击者控制的URL获取Atom源，下载tarball，提取并复制所有提取的文件到文档根目录，可能导致远程代码执行。
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)

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Affected Products

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

II. Public POCs for CVE-2026-27180

# POC Description Source Link Shenlong Link
1 None https://github.com/mbanyamer/CVE-2026-27180-MajorDoMo-unauthenticated-RCE POC Details
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III. Intelligence Information for CVE-2026-27180

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Patches & Fixes for CVE-2026-27180 (1)

Vendor Advisories for CVE-2026-27180 (1)

Security Blog Posts for CVE-2026-27180 (1)

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

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-2026-27178 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-494

V. Comments for CVE-2026-27180

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