Nodriver Proxy — the complete, unedited output of the deterministic mcptrustchecker engine v1.8.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.8.0",
"methodologyVersion": "mcptrustchecker-1.8"
},
"target": {
"id": "nodriver-proxy-mcp",
"source": {
"kind": "package",
"origin": "nodriver-proxy-mcp"
},
"server": {
"name": "nodriver-proxy-mcp"
}
},
"grade": "A",
"score": {
"score": 93,
"threatScore": 100,
"grade": "A",
"band": "A",
"categorySubtotals": {
"injection": 0,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 0,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "client",
"term": "capability-exposure",
"level": "high",
"label": "capability blast radius (high) — client exposure if the model is manipulated",
"appliedPenalty": 6
},
{
"kind": "client",
"term": "verification-discount",
"level": "repo",
"label": "publisher verification (public source) — no provenance, but the source is public and inspectable",
"appliedPenalty": 1
},
{
"kind": "client",
"term": "coverage-honesty",
"level": "source",
"label": "inspection depth (source) — how much of the target the scan could see",
"appliedPenalty": 0
}
],
"gatesFired": [],
"methodologyVersion": "mcptrustchecker-1.8"
},
"capability": {
"level": "high",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)",
"can send data / act on an external service",
"can execute shell commands or code"
],
"tags": [
"untrusted-input",
"external-sink",
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (39 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command \"npx -y <package>\"."
]
},
"findings": [
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/nodriver_proxy_mcp/browser/session_manager.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/nodriver_proxy_mcp/browser/session_manager.py:243`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.",
"remediation": "Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.",
"location": {
"kind": "server",
"name": "src/nodriver_proxy_mcp/browser/session_manager.py"
},
"evidence": "True proc = subprocess.Popen(cmd, **popen_kwargs) if not self._wait_for_ipc(ipc_port, timeout=10.",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/nodriver_proxy_mcp/browser/session_manager.py",
"line": 243,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/nodriver_proxy_mcp/codemode/tools.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/nodriver_proxy_mcp/codemode/tools.py:113`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.",
"remediation": "Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.",
"location": {
"kind": "server",
"name": "src/nodriver_proxy_mcp/codemode/tools.py"
},
"evidence": "try: subprocess.run( [\"taskkill\", \"/F\", \"/T\", \"/PID\", str(pid)], ca",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/nodriver_proxy_mcp/codemode/tools.py",
"line": 113,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/nodriver_proxy_mcp/proxy/controller.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/nodriver_proxy_mcp/proxy/controller.py:91`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.",
"remediation": "Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.",
"location": {
"kind": "server",
"name": "src/nodriver_proxy_mcp/proxy/controller.py"
},
"evidence": "self._proc = subprocess.Popen(cmd, **popen_kwargs) self._port = port # Drain stderr in ba",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/nodriver_proxy_mcp/proxy/controller.py",
"line": 91,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/nodriver_proxy_mcp/sdk.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/nodriver_proxy_mcp/sdk.py:682`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.",
"remediation": "Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.",
"location": {
"kind": "server",
"name": "src/nodriver_proxy_mcp/sdk.py"
},
"evidence": "True proc = subprocess.Popen(cmd, **popen_kwargs) if not _wait_for_port(ipc_port, timeout=15.0):",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/nodriver_proxy_mcp/sdk.py",
"line": 682,
"nonRuntime": false
}
},
{
"ruleId": "MTC-FLOW-005",
"title": "Untrusted input can drive an external action",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "Untrusted-input tools ([browser_intercept_disable, browser_list_intercept_rules, list_interception_rules]) co-exist with external-action tools ([generate_curl]). A prompt injection could cause unwanted external actions, though no direct sensitive-data leak path was found.",
"remediation": "Require confirmation for state-changing/egress actions triggered after processing untrusted content.",
"location": {
"kind": "flow",
"name": "browser_intercept_disable → generate_curl"
},
"evidence": "untrusted [browser_intercept_disable, browser_list_intercept_rules, list_interception_rules] → sinks [generate_curl]",
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"browser_intercept_disable",
"browser_list_intercept_rules",
"list_interception_rules"
],
"sinks": [
"generate_curl"
]
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"browser_intercept_disable",
"browser_list_intercept_rules",
"list_interception_rules"
],
"sensitiveSource": [],
"externalSink": [
"generate_curl"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "browser_open",
"tags": [],
"reasons": {}
},
{
"tool": "browser_close",
"tags": [],
"reasons": {}
},
{
"tool": "browser_list_sessions",
"tags": [],
"reasons": {}
},
{
"tool": "browser_list_tabs",
"tags": [],
"reasons": {}
},
{
"tool": "browser_go",
"tags": [],
"reasons": {}
},
{
"tool": "browser_back",
"tags": [],
"reasons": {}
},
{
"tool": "browser_get_dom",
"tags": [],
"reasons": {}
},
{
"tool": "browser_get_text",
"tags": [],
"reasons": {}
},
{
"tool": "browser_get_storage",
"tags": [],
"reasons": {}
},
{
"tool": "browser_get_console",
"tags": [],
"reasons": {}
},
{
"tool": "browser_screenshot",
"tags": [],
"reasons": {}
},
{
"tool": "browser_click",
"tags": [],
"reasons": {}
},
{
"tool": "browser_type",
"tags": [],
"reasons": {}
},
{
"tool": "browser_set_cookie",
"tags": [],
"reasons": {}
},
{
"tool": "browser_js",
"tags": [],
"reasons": {}
},
{
"tool": "browser_wait",
"tags": [],
"reasons": {}
},
{
"tool": "browser_intercept_request",
"tags": [],
"reasons": {}
},
{
"tool": "browser_intercept_response",
"tags": [],
"reasons": {}
},
{
"tool": "browser_intercept_disable",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "browser_list_intercept_rules",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "execute_security_code",
"tags": [],
"reasons": {}
},
{
"tool": "manage_proxy",
"tags": [],
"reasons": {}
},
{
"tool": "set_scope",
"tags": [],
"reasons": {}
},
{
"tool": "proxy_status",
"tags": [],
"reasons": {}
},
{
"tool": "get_traffic_summary",
"tags": [],
"reasons": {}
},
{
"tool": "inspect_flow",
"tags": [],
"reasons": {}
},
{
"tool": "search_traffic",
"tags": [],
"reasons": {}
},
{
"tool": "extract_from_flow",
"tags": [],
"reasons": {}
},
{
"tool": "clear_traffic",
"tags": [],
"reasons": {}
},
{
"tool": "generate_curl",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"curl\""
]
}
},
{
"tool": "replay_flow",
"tags": [],
"reasons": {}
},
{
"tool": "send_raw_request",
"tags": [],
"reasons": {}
},
{
"tool": "add_interception_rule",
"tags": [],
"reasons": {}
},
{
"tool": "remove_interception_rule",
"tags": [],
"reasons": {}
},
{
"tool": "list_interception_rules",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "extract_session_variable",
"tags": [],
"reasons": {}
},
{
"tool": "list_session_variables",
"tags": [],
"reasons": {}
},
{
"tool": "detect_auth_pattern",
"tags": [],
"reasons": {}
},
{
"tool": "fuzz_endpoint",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "190b17e7d4098fbb462ecba433a240081308af0913b07825ff6dc529d29ad14e",
"stats": {
"tools": 39,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 4,
"medium": 1,
"low": 0,
"info": 0
}
}
}