Home › MCP Server › Security: Threats, Risks, and Controls › Top 10 MCP Server Vulnerabilities › 4. Command Injection via Insecure Wrappers Jun 30, 2025 · Updated Jul 02, 2025 1 min read 4. Command Injection via Insecure Wrappers 4. Command Injection via Insecure Wrappers Improperly validated inputs sent to shell commands (e.g., os.system()) allow RCE. Example: os.system(user_input) Mitigation: Use subprocess.run([…]) safely Apply allowlists and input validation Share: