Vulnerability · Published Sep 8, 2025 · Assigned by GitHub_M
CVE-2025-54994@akoskm/create-mcp-server-stdio has Command Injection in MCP Server due to unsafe `exec` API
Critical 9.3
In plain English
A critical-severity OS command injection in create-mcp-server-stdio from akoskm. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
@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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @akoskm/create-mcp-server-stdio | 0.0.13 | GHSA-3ch2-jxxc-v4xf |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| akoskm | create-mcp-server-stdio | < 0.0.13 |
Weakness: CWE-78 · Vector: 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
References
- https://github.com/akoskm/create-mcp-server-stdio/security/advisories/GHSA-3ch2-jxxc-v4xf x_refsource_CONFIRM
- https://github.com/akoskm/create-mcp-server-stdio/commit/48c26bbe1f8c62764e4592f33c8300d1cadd2eac x_refsource_MISC
- https://github.com/akoskm/create-mcp-server-stdio/blob/main/src/index.ts#L24-L40 x_refsource_MISC