PolarVista xcode-mcp-server OS Command Injection Vulnerability

PolarVista xcode-mcp-server version 1.0.0 is vulnerable to OS command injection (CVE-2026-7416). This vulnerability exists in the build_project/run_tests function within the src/index.ts file of the MCP Interface component. An attacker can remotely inject operating system commands by manipulating the Request argument. The vulnerability has been publicly disclosed, increasing the risk of exploitation. The vendor has been notified but has not yet responded, leaving systems exposed. This poses a significant risk to organizations using this software, as successful exploitation allows complete system compromise.

Attack Chain

1. The attacker identifies a vulnerable instance of PolarVista xcode-mcp-server 1.0.0.
2. The attacker crafts a malicious request targeting the build_project/run_tests function in src/index.ts.
3. The malicious request includes an OS command injection payload within the Request argument.
4. The application fails to properly sanitize or validate the Request argument.
5. The application executes the injected OS command on the server.
6. The attacker gains arbitrary code execution on the server, potentially escalating privileges.
7. The attacker installs malware, such as a reverse shell, to maintain persistent access.
8. The attacker performs reconnaissance, lateral movement, and data exfiltration within the compromised network.

Impact

Successful exploitation of this vulnerability allows a remote attacker to execute arbitrary operating system commands on the affected server. This can lead to complete system compromise, data breaches, and denial of service. There are no reported victims or sectors targeted at this time, but given the ease of exploitation and public availability, the risk is high.

Recommendation

• Apply available patches from PolarVista as soon as they are released to remediate CVE-2026-7416.
• Implement input validation and sanitization for the Request argument in the build_project/run_tests function to prevent command injection.
• Monitor web server logs for suspicious requests targeting the build_project/run_tests endpoint.
• Deploy the Sigma rule “Detect Suspicious xcode-mcp-server Requests” to identify potential exploitation attempts.