CVE-2026-117567

HIGH 7.8

esp-mcp through commit 28afddf OS Command Injection via MCP Tool Parameters

CVSS Score

7.8

EPSS Score

0.0%

EPSS Percentile

0th

esp-mcp through commit 28afddf contains an OS command injection vulnerability that allows attackers to run arbitrary commands by supplying shell metacharacters in MCP tool parameters. Attackers influencing agent tool calls through prompt injection can inject metacharacters into target, port, project_path, or project_name values passed to asyncio.create_subprocess_shell, executing commands as the MCP server user.

CWE	CWE-78
Vendor	horw
Product	esp-mcp
Published	Oct 27, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

horw / esp-mcp

0 ≤ 28afddf9ff41ada117bb45fd49b526d3bf89749e

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/horw/esp-mcp/issues/49 github.com: https://github.com/horw/esp-mcp github.com: https://github.com/horw/esp-mcp/blob/28afddf9ff41ada117bb45fd49b526d3bf89749e/main.py#L80 vulncheck.com: https://www.vulncheck.com/advisories/esp-mcp-through-commit-28afddf-os-command-injection-via-mcp-tool-parameters

Credits

Nguyễn Văn Tiến