CVE-2026-27174

CRITICAL 9.8

MajorDoMo Unauthenticated Remote Code Execution via Admin Console Eval

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-94
Vendor	sergejey
Product	majordomo
Published	Feb 18, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

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 Versions

sergejey / MajorDoMo

0 ≤ *

References

NVD ↗ CVE.org ↗ EPSS Data ↗

chocapikk.com: https://chocapikk.com/posts/2026/majordomo-revisited/ github.com: https://github.com/sergejey/majordomo/pull/1177 vulncheck.com: https://www.vulncheck.com/advisories/majordomo-unauthenticated-remote-code-execution-via-admin-console-eval

Credits

Valentin Lobstein