Attack Chain

1. The attacker identifies an AgiFlow scaffold-mcp instance running a vulnerable version (<= 1.0.27).
2. The attacker crafts a malicious request targeting the “write-to-file” tool.
3. The request includes a manipulated file_path argument containing path traversal sequences (e.g., “../”, “..\”).
4. The server-side application processes the request without proper sanitization or validation of the file_path argument.
5. The application attempts to write data to the attacker-controlled file path.
6. Due to the path traversal sequences, the data is written to an arbitrary location on the server’s file system.
7. The attacker may overwrite critical system files, inject malicious code, or exfiltrate sensitive data, depending on the write permissions and targeted file location.
8. Successful exploitation leads to arbitrary code execution, data compromise, or denial of service.

Impact

Successful exploitation of CVE-2026-7237 allows attackers to write arbitrary files to the affected system, potentially leading to code execution, data exfiltration, or denial of service. The number of affected installations is currently unknown. Due to the public availability of the exploit, organizations using AgiFlow scaffold-mcp are at immediate risk.

Recommendation

• Upgrade AgiFlow scaffold-mcp to version 1.1.0 or later to remediate CVE-2026-7237, applying the patch identified by commit hash c4d23592ae5fb59cfeefc4641e6826f8ac89b9c6.
• Implement input validation and sanitization on the file_path argument within the “write-to-file” tool to prevent path traversal attacks.
• Deploy the Sigma rule “Detect AgiFlow Scaffold-mcp Path Traversal Attempt” to identify exploitation attempts in web server logs.
• Monitor web server logs for suspicious requests containing path traversal sequences in the URI.