What’s Vulnerable › Vulnerabilities

CVE-2025-54994: @akoskm/create-mcp-server-stdio has Command Injection in MCP Server due to unsafe `exec` API

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-08 · updated 2026-06-17
• Weakness: CWE-78

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 products

• akoskm create-mcp-server-stdio: before 0.0.13

References

• https://github.com/akoskm/create-mcp-server-stdio/blob/main/src/index.ts#L24-L40
• https://github.com/akoskm/create-mcp-server-stdio/commit/48c26bbe1f8c62764e4592f33c8300d1cadd2eac
• https://github.com/akoskm/create-mcp-server-stdio/security/advisories/GHSA-3ch2-jxxc-v4xf

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