CVE-2026-27175 (GCVE-0-2026-27175)
Vulnerability from cvelistv5 – Published: 2026-02-18 21:10 – Updated: 2026-11-08 14:01
VLAI
EPSS
VEX
Title
MajorDoMo Command Injection in rc/index.php via Race Condition
Summary
MajorDoMo (aka Major Domestic Module) is vulnerable to unauthenticated OS command injection via rc/index.php. The $param variable from user input is interpolated into a command string within double quotes without sanitization via escapeshellarg(). The command is inserted into a database queue by safe_exec(), which performs no sanitization. The cycle_execs.php script, which is web-accessible without authentication, retrieves queued commands and passes them directly to exec(). An attacker can exploit a race condition by first triggering cycle_execs.php (which purges the queue and enters a polling loop), then injecting a malicious command via the rc endpoint while the worker is polling. The injected shell metacharacters expand inside double quotes, achieving remote code execution within one second.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-26 16:20 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
VulnCheck
CNA
References
3 references
| URL | Tags |
|---|---|
| https://chocapikk.com/posts/2026/majordomo-revisited/ | third-party-advisory |
| https://github.com/sergejey/majordomo/pull/1177 | issue-trackingpatch |
| https://www.vulncheck.com/advisories/majordomo-co… | third-party-advisory |
Impacted products
Date Public
2026-02-17 00:00
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