CVE-2026-27174 — CRITICAL (9.8)

Vulnerability Description

MajorDoMo (aka Major Domestic Module) allows unauthenticated remote code execution via the admin panel's PHP console feature. An include order bug in modules/panel.class.php causes execution to continue past a redirect() call that lacks an exit statement, allowing unauthenticated requests to reach the ajax handler in inc_panel_ajax.php. The console handler within that file passes user-supplied input from GET parameters (via register_globals) directly to eval() without any authentication check. An attacker can execute arbitrary PHP code by sending a crafted GET request to /admin.php with ajax_panel, op, and command parameters.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mjdm	Majordomo	-

Related Weaknesses (CWE)

CWE-94

References

https://chocapikk.com/posts/2026/majordomo-revisited/Third Party AdvisoryExploit
https://github.com/sergejey/majordomo/pull/1177Issue TrackingExploit
https://www.vulncheck.com/advisories/majordomo-unauthenticated-remote-code-execuThird Party Advisory

FAQ

What is CVE-2026-27174?

CVE-2026-27174 is a vulnerability with a CVSS score of 9.8 (CRITICAL). MajorDoMo (aka Major Domestic Module) allows unauthenticated remote code execution via the admin panel's PHP console feature. An include order bug in modules/panel.class.php causes execution to contin...

How severe is CVE-2026-27174?

CVE-2026-27174 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-27174?

Check the references section above for vendor advisories and patch information. Affected products include: Mjdm Majordomo.