MajorDoMo (aka Major Domestic Module) contains a stored cross-site scripting (XSS) vulnerability through method parameter injection into the shoutbox. The /objects/?method= endpoint allows unauthenticated execution of stored methods with attacker-controlled parameters. Default methods such as ThisComputer.VolumeLevelChanged pass the user-supplied VALUE parameter directly into the say() function, which stores the message raw in the shouts database table without escaping. The shoutbox widget renders stored messages without sanitization in both PHP rendering code and HTML templates. Because the dashboard widget auto-refreshes every 3 seconds, the injected script executes automatically when any administrator loads the dashboard, enabling session hijack through cookie exfiltration.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Mjdm
  • Majordomo
Sergejey
  • Majordomo

Configuration 1 [-]

cpe:2.3:a:mjdm:majordomo:-:*:*:*:*:*:*:*

No data.

References
Link Providers
https://chocapikk.com/posts/2026/majordomo-revisited/ cve-icon cve-icon
https://github.com/sergejey/majordomo/pull/1177 cve-icon cve-icon
https://www.vulncheck.com/advisories/majordomo-stored-cross-site-scripting-via-method-parameters-to-shoutbox cve-icon cve-icon
History

Fri, 20 Feb 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Mjdm
Mjdm majordomo
CPEs cpe:2.3:a:mjdm:majordomo:-:*:*:*:*:*:*:*
Vendors & Products Mjdm
Mjdm majordomo

Fri, 20 Feb 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 18 Feb 2026 21:30:00 +0000

Type Values Removed Values Added
Description MajorDoMo (aka Major Domestic Module) contains a stored cross-site scripting (XSS) vulnerability through method parameter injection into the shoutbox. The /objects/?method= endpoint allows unauthenticated execution of stored methods with attacker-controlled parameters. Default methods such as ThisComputer.VolumeLevelChanged pass the user-supplied VALUE parameter directly into the say() function, which stores the message raw in the shouts database table without escaping. The shoutbox widget renders stored messages without sanitization in both PHP rendering code and HTML templates. Because the dashboard widget auto-refreshes every 3 seconds, the injected script executes automatically when any administrator loads the dashboard, enabling session hijack through cookie exfiltration.
Title MajorDoMo Stored Cross-Site Scripting via Method Parameters to Shoutbox
First Time appeared Sergejey
Sergejey majordomo
Weaknesses CWE-79
CPEs cpe:2.3:a:sergejey:majordomo:*:*:*:*:*:*:*:*
Vendors & Products Sergejey
Sergejey majordomo
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-02-18T21:10:39.441Z

Updated: 2026-02-20T19:02:22.949Z

Reserved: 2026-02-18T15:22:30.053Z

Link: CVE-2026-27178

cve-icon Vulnrichment

Updated: 2026-02-20T19:02:16.530Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-18T22:16:25.790

Modified: 2026-02-20T19:58:33.253

Link: CVE-2026-27178

cve-icon Redhat

No data.