meta-mcp-server

The server's design inherently involves executing external commands and arbitrary code. While `stdio-transport.ts` whitelists base commands (e.g., 'node', 'docker', 'npx'), it does not sanitize or restrict arguments. A compromised `servers.json` file could therefore be used to execute arbitrary commands with a whitelisted binary, posing a significant local privilege escalation risk. The `mcp-exec` package, designed for arbitrary code execution, uses a sandbox runtime. However, its default `allowNetworkAccess: true` setting means code executed within the sandbox can make unrestricted network requests, creating a pathway for data exfiltration or external attacks if an RCE is achieved. Additionally, `cursor-token-reader.ts` uses `execFileSync` to retrieve sensitive tokens from OS password stores, introducing a complex and potentially vulnerable attack surface. While there are some security best practices like environment variable filtering and path validation for env files, the fundamental reliance on executing dynamic code/commands from configuration necessitates extreme caution regarding the integrity of configuration sources.