CVE-2026-27177: medium-severity vulnerability in sergejey MajorDoMo
MajorDoMo Stored Cross-Site Scripting via Property Set Endpoint
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.2%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Affected products
sergejey · MajorDoMoRelated CVEs — sergejey MajorDoMo
In the same product, most dangerous first.
CVE-2026-27175CRITICALMajorDoMo Command Injection in rc/index.php via Race ConditionEPSS 6.9%CVE-2026-27174CRITICALMajorDoMo Unauthenticated Remote Code Execution via Admin Console EvalEPSS 6.9%CVE-2026-27180CRITICALMajorDoMo Supply Chain Remote Code Execution via Update URL PoisoningEPSS 1.2%CVE-2026-27181HIGHMajorDoMo Unauthenticated Module Uninstall via Market EndpointEPSS 0.8%CVE-2026-27179HIGHMajorDoMo Unauthenticated SQL Injection in Commands ModuleEPSS 0.5%CVE-2026-27176MEDIUMMajorDoMo Reflected Cross-Site Scripting in command.phpEPSS 0.5%