What’s Vulnerable › Vulnerabilities

CVE-2026-27174: MajorDoMo Unauthenticated Remote Code Execution via Admin Console Eval

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-18 · updated 2026-06-17
• Weakness: CWE-94

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.

Affected products

• sergejey MajorDoMo: all versions

References

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

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