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    CVE-2026-27177

    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.

    Published:Feb 18, 2026
    Last Modified:Apr 16, 2026
    EPS:Feb 18, 2026
    EPSS Score:0.0004
    CVSS Score:7.2

    Affected Products

    Vendor
    Mjdm
    Product
    Majordomo
    Vendor
    Sergejey
    Product
    Majordomo

    Exploits

    https://chocapikk.com/posts/2026/majordomo-revisited/https://github.com/sergejey/majordomo/pull/1177

    Related CVEs

    CVE-2026-27181 (CVSS 8.7) — MajorDoMo (aka Major Domestic Module) allows unauthenticated arbitrary module uninstallation through the marke…
    CVE-2026-27180 (CVSS 9.3) — MajorDoMo (aka Major Domestic Module) is vulnerable to unauthenticated remote code execution through supply ch…
    CVE-2026-27179 (CVSS 8.8) — MajorDoMo (aka Major Domestic Module) contains an unauthenticated SQL injection vulnerability in the commands …
    CVE-2026-27178 (CVSS 5.3) — MajorDoMo (aka Major Domestic Module) contains a stored cross-site scripting (XSS) vulnerability through metho…
    CVE-2026-27176 (CVSS 5.1) — MajorDoMo (aka Major Domestic Module) contains a reflected cross-site scripting (XSS) vulnerability in command…
    CVE-2026-27175 (CVSS 9.2) — MajorDoMo (aka Major Domestic Module) is vulnerable to unauthenticated OS command injection via rc/index.php. …
    CVE-2026-27174 (CVSS 9.3) — MajorDoMo (aka Major Domestic Module) allows unauthenticated remote code execution via the admin panel's PHP c…
    CVE-2024-33465 (CVSS 7.1) — Cross Site Scripting vulnerability in MajorDoMo before v.0662e5e allows an attacker to escalate privileges via…
    CVE-2023-50917 (CVSS 9.8) — MajorDoMo (aka Major Domestic Module) before 0662e5e allows command execution via thumb.php shell metacharacte…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High