HighAI coding agentsBLWK-AI-020

A filesystem MCP server is granted an over-broad root

What this means

A filesystem MCP server granted an over-broad root (/ or your whole home directory).

How to fix it

Scope the filesystem MCP server to the specific project directory it needs instead of / or your whole home directory. A broad root lets a prompt-injected agent read or write anything under it — including SSH keys, browser profiles, and other projects' secrets.

Check it yourself

Run a scan and look for BLWK-AI-020 in the results:

bulwark scan
bulwark ai scan

Installed the standalone CLI package instead of the app? The command is bulwarkctl.

References

• MITRE ATT&CK T1083

Related checks

• Project-supplied agent hooks run shell commands automatically · BLWK-AI-002
• An agent permission allowlist permits arbitrary command execution · BLWK-AI-006
• An agent is configured to bypass all permission prompts · BLWK-AI-007
• Project MCP servers are set to auto-enable without prompting · BLWK-AI-008
• VS Code chat auto-approve (“YOLO mode”) is enabled · BLWK-AI-009
• VS Code Workspace Trust is disabled · BLWK-AI-010