---
title: "CVE-2026-117567: esp-mcp - Command Injection"
description: "esp-mcp through commit 28afddf contains a command injection caused by shell metacharacters in MCP tool parameters, letting attackers execute arbitrary OS commands as MCP server user, exploit requires attacker to influence agent tool calls."
url: https://panop.io/threat-heartbeat/CVE-2026-117567/
---

# CVE-2026-117567 esp-mcp - Command Injection

esp-mcp through commit 28afddf contains a command injection caused by shell metacharacters in MCP tool parameters, letting attackers execute arbitrary OS commands as MCP server user, exploit requires attacker to influence agent tool calls.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.65% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-117567)

## Details

Type

Command Injection

Impact

Remote Code Execution

CVSS vector

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

Published

27 October 2026

Updated

29 October 2026

Weakness

[CWE-78](https://cwe.mitre.org/data/definitions/78.html)

## Vendor fix

Update esp-mcp to a version after commit 28afddf or latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-117567](https://nvd.nist.gov/vuln/detail/CVE-2026-117567)
- [https://www.vulncheck.com/advisories/esp-mcp-through-commit-28afddf-os-command-injection-via-mcp-tool-parameters](https://www.vulncheck.com/advisories/esp-mcp-through-commit-28afddf-os-command-injection-via-mcp-tool-parameters)
- [https://github.com/horw/esp-mcp](https://github.com/horw/esp-mcp)
- [https://github.com/horw/esp-mcp/blob/28afddf9ff41ada117bb45fd49b526d3bf89749e/main.py#L80](https://github.com/horw/esp-mcp/blob/28afddf9ff41ada117bb45fd49b526d3bf89749e/main.py#L80)
- [https://github.com/horw/esp-mcp/issues/49](https://github.com/horw/esp-mcp/issues/49)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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