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CVE-2026-55581

🗓️ 25 Aug 2026 15:40:10Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 84 Views🌐 WEB

Allowlist bypass in mcp-shell before 0.6.0 via /bin/bash -c enables arbitrary command execution.

Related
Detection
Affected
Refs
Paths
Vulners
Node
[
  {
    "vendor": "sonirico",
    "product": "mcp-shell",
    "versions": [
      {
        "version": "< 0.6.0",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
commandrequest body/shell_execThe shell_exec MCP tool allows a caller to provide a command argument that bypasses validation by using the /bin/bash -c flag, leading to arbitrary command execution.CWE-1188, CWE-183, CWE-78

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09 Sep 2026 21:07Current
6Medium risk
Vulners AI Score6
CVSS 3.18.4
EPSS0.00454
SSVC
84