---
title: "CVE-2025-54994: @akoskm/create-mcp-server-stdio is vulnerable to MCP Server Command Injection through `exec` API"
url: https://erroneo.us/security/cve/CVE-2025-54994/
description: "CVE-2025-54994 (@akoskm/create-mcp-server-stdio (npm)): @akoskm/create-mcp-server-stdio is an MCP server starter kit that uses the StdioServerTransport.…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-09-08
date_modified: 2025-09-10
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-54994"
kev: false
cvss: 9.3
epss: 0.01337
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-54994: @akoskm/create-mcp-server-stdio is vulnerable to MCP Server Command Injection through `exec` API

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 1.3% , percentile 71: FIRST’s model estimates a 1.3% chance of exploitation activity in the next 30 days, higher than 71% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes @akoskm/create-mcp-server-stdio (npm) < 0.0.13, fixed in 0.0.13 . Check your lockfile, including transitive dependencies.

## What it is

@akoskm/create-mcp-server-stdio is an MCP server starter kit that uses the StdioServerTransport. Prior to version 0.0.13, the MCP Server is written in a way that is vulnerable to command injection vulnerability attacks as part of some of its MCP Server tool definition and implementation. The MCP Server exposes the tool which-app-on-port which relies on Node.js child process API exec which is an unsafe and vulnerable API if concatenated with untrusted user input. Version 0.0.13 contains a fix for the issue.

## Affected packages

- npm `@akoskm/create-mcp-server-stdio` < 0.0.13 → fixed: 0.0.13

## Affected products (CVE record)

- akoskm create-mcp-server-stdio: < 0.0.13

## Severity

- GitHub_M CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.34% probability of exploitation activity in the next 30 days; percentile 71.

## Sources

- [GitHub Advisory GHSA-3ch2-jxxc-v4xf](https://github.com/advisories/GHSA-3ch2-jxxc-v4xf)
- [CVE.org record CVE-2025-54994](https://www.cve.org/CVERecord?id=CVE-2025-54994)
- [NVD entry CVE-2025-54994](https://nvd.nist.gov/vuln/detail/CVE-2025-54994)
- [github.com](https://github.com/akoskm/create-mcp-server-stdio/security/advisories/GHSA-3ch2-jxxc-v4xf)
- [github.com](https://github.com/akoskm/create-mcp-server-stdio/commit/48c26bbe1f8c62764e4592f33c8300d1cadd2eac)
- [github.com](https://github.com/akoskm/create-mcp-server-stdio/blob/main/src/index.ts#L24-L40)
- [github.com](https://github.com/akoskm/create-mcp-server-stdio/pull/1)

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Source page: https://erroneo.us/security/cve/CVE-2025-54994/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt