CVE-2026-27174
MajorDoMo Unauthenticated Remote Code Execution via Admin Console Eval
- State
- Published
- Severity
- 9.3 Critical
- Published
- Feb 18, 2026
- Updated
- Jun 23, 2026
- Reserved
- Feb 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-94 Improper Control of Generation of Code ('Code Injection')
Affected Products
| Product | Versions |
|---|---|
MajorDoMosergejey |
|
References
- MajorDoMo Revisited: What I Missed in 2023third-party-advisory
- Fix PR: sergejey/majordomo#1177issue-tracking
- VulnCheck Advisory: MajorDoMo Unauthenticated Remote Code Execution via Admin Console Evalthird-party-advisory
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