This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login.
Read the full analysis โ
Q1What is this vulnerability? (Essence + Consequences)
๐จ **Essence**: MajorDoMo has an unauthenticated RCE via update poisoning. ๐ **Consequences**: Attackers poison update URLs, trigger forced updates, download malicious tarballs, and execute code on the server.โฆ
๐ก๏ธ **CWE-494**: Download of Code from an Untrusted Source. ๐ **Flaw**: The `saverestore` module exposes `admin()` via `/objects/?module=saverestore` without authentication.โฆ
๐ **Product**: MajorDoMo (Open-source DIY smart home platform). ๐ค **Vendor**: sergejey. ๐ฆ **Component**: `saverestore` module. โ ๏ธ **Scope**: Any instance running the vulnerable version without the fix from PR #1177.
Q4What can hackers do? (Privileges/Data)
๐ **Privileges**: Remote Code Execution (RCE) as the web server user. ๐พ **Data**: Full access to document root, system files, and potentially other smart home devices.โฆ
๐ **Threshold**: VERY LOW. ๐ **Auth**: None required (Unauthenticated). ๐ **Network**: Network-accessible (AV:N). ๐ซ **UI**: No user interaction needed (UI:N). โก **Complexity**: Low (AC:L).
Q6Is there a public Exp? (PoC/Wild Exploitation)
๐ **Public Exp**: YES. ๐ **PoC**: Available on GitHub (`mbanyamer/CVE-2026-27180-MajorDoMo-unauthenticated-RCE`). ๐ข **Advisories**: VulnCheck and Chocapikk have published detailed analysis.โฆ
โ **Fixed**: YES. ๐ **Patch**: PR #1177 (`sergejey/majordomo#1177`) addresses the issue. ๐ **Action**: Update MajorDoMo to the latest version including this PR.โฆ
๐ซ **Workaround**: Block external access to `/objects/` endpoint via WAF/NGINX. ๐ **Restrict**: Disable automatic update features if possible. ๐ **Network**: Isolate the MajorDoMo instance from the internet.โฆ