Wave — the complete, unedited output of the deterministic mcptrustchecker engine v1.13.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.13.0",
"methodologyVersion": "mcptrustchecker-1.13"
},
"target": {
"id": "wave-mcp",
"source": {
"kind": "package",
"origin": "wave-mcp"
},
"server": {
"name": "wave-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-1.13"
},
"capability": {
"level": "high",
"reasons": [
"reads sensitive or local data",
"has a read → egress path (a data-exfiltration surface)",
"can execute shell commands or code"
],
"tags": [
"sensitive-source",
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (34 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 (wave_mcp/convert.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`wave_mcp/convert.py:161`): 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": "wave_mcp/convert.py"
},
"evidence": "\\n1!\\n\") proc = subprocess.run([VCD2FST_BIN, \"-F\", \"-p\", \"-v\", vcd, \"-f\", fst], ca",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "wave_mcp/convert.py",
"line": 161,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (wave_mcp/viewer/__init__.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`wave_mcp/viewer/__init__.py:215`): 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": "wave_mcp/viewer/__init__.py"
},
"evidence": "rocess try: subprocess.Popen([opener, url], stdout=subprocess.DEVNULL, stderr=subpr",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "wave_mcp/viewer/__init__.py",
"line": 215,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (wave_mcp/viewer/surver.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`wave_mcp/viewer/surver.py:78`): 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": "wave_mcp/viewer/surver.py"
},
"evidence": "proc = subprocess.Popen( [binary, \"--port\", str(port), \"--bind-address\", \"127.0.0.1",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "wave_mcp/viewer/surver.py",
"line": 78,
"nonRuntime": false
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "open_session",
"tags": [],
"reasons": {}
},
{
"tool": "close_session",
"tags": [],
"reasons": {}
},
{
"tool": "session_info",
"tags": [],
"reasons": {}
},
{
"tool": "prepare_session",
"tags": [],
"reasons": {}
},
{
"tool": "open_static_session",
"tags": [],
"reasons": {}
},
{
"tool": "convert_vcd_to_fst",
"tags": [],
"reasons": {}
},
{
"tool": "convert_fsdb_to_fst",
"tags": [],
"reasons": {}
},
{
"tool": "list_child_instances",
"tags": [],
"reasons": {}
},
{
"tool": "list_modules",
"tags": [],
"reasons": {}
},
{
"tool": "instances_of_module",
"tags": [],
"reasons": {}
},
{
"tool": "instances_of_module_matching",
"tags": [],
"reasons": {}
},
{
"tool": "scope_info",
"tags": [],
"reasons": {}
},
{
"tool": "list_signals",
"tags": [],
"reasons": {}
},
{
"tool": "signal_info",
"tags": [],
"reasons": {}
},
{
"tool": "signal_values",
"tags": [],
"reasons": {}
},
{
"tool": "signal_values_in_range",
"tags": [],
"reasons": {}
},
{
"tool": "signal_value_at",
"tags": [],
"reasons": {}
},
{
"tool": "signal_connectivity",
"tags": [],
"reasons": {}
},
{
"tool": "signal_drivers",
"tags": [],
"reasons": {}
},
{
"tool": "signal_loads",
"tags": [],
"reasons": {}
},
{
"tool": "signal_fanin",
"tags": [],
"reasons": {}
},
{
"tool": "active_drivers",
"tags": [],
"reasons": {}
},
{
"tool": "driver_contributors",
"tags": [],
"reasons": {}
},
{
"tool": "trace_value",
"tags": [],
"reasons": {}
},
{
"tool": "trace_x",
"tags": [],
"reasons": {}
},
{
"tool": "list_files",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"list_files\""
]
}
},
{
"tool": "find_files",
"tags": [],
"reasons": {}
},
{
"tool": "modules_in_file",
"tags": [],
"reasons": {}
},
{
"tool": "diff_waveforms",
"tags": [],
"reasons": {}
},
{
"tool": "open_wave_view",
"tags": [],
"reasons": {}
},
{
"tool": "update_wave_view",
"tags": [],
"reasons": {}
},
{
"tool": "get_view_state",
"tags": [],
"reasons": {}
},
{
"tool": "list_wave_views",
"tags": [],
"reasons": {}
},
{
"tool": "close_wave_view",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "359065b63eebf6936b9063fc11210f540e15c65fa694fb7fab60cced2b33ce8b",
"stats": {
"tools": 34,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 3,
"medium": 0,
"low": 0,
"info": 0
}
}
}