Servers — 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": "mcp-servers",
"source": {
"kind": "package",
"origin": "mcp-servers"
},
"server": {
"name": "mcp-servers"
}
},
"grade": "C",
"score": {
"score": 74,
"threatScore": 81,
"grade": "C",
"band": "C",
"categorySubtotals": {
"injection": 0,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 18.55,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "threat",
"ruleId": "MTC-SUP-005",
"category": "supply-chain",
"severity": "high",
"confidence": "strong",
"rawWeight": 22,
"confidenceMult": 0.7,
"diminishingFactor": 1,
"appliedPenalty": 15.4
},
{
"kind": "threat",
"ruleId": "MTC-SUP-005",
"category": "supply-chain",
"severity": "medium",
"confidence": "strong",
"rawWeight": 9,
"confidenceMult": 0.7,
"diminishingFactor": 0.5,
"appliedPenalty": 3.15
},
{
"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": [
"can execute shell commands or code"
],
"tags": [
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (1 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 (mcp_servers/cli_app.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`mcp_servers/cli_app.py:167`): 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": "mcp_servers/cli_app.py"
},
"evidence": "try: result = subprocess.run(command, check=True, text=True, capture_output=True) print(f\"Container st",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "mcp_servers/cli_app.py",
"line": 167,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (mcp_servers/filesystem.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`mcp_servers/filesystem.py:296`): 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": "mcp_servers/filesystem.py"
},
"evidence": "completed = subprocess.run(cmd, check=True, text=True, capture_output=True) found_matches = [str",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "mcp_servers/filesystem.py",
"line": 296,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SUP-005",
"title": "Near-miss of @sentry/mcp-server (edit distance 1)",
"category": "supply-chain",
"severity": "high",
"confidence": "strong",
"description": "\"mcp-servers\" is edit-distance 1 from the high-traffic package \"@sentry/mcp-server\". Verify this is the intended package.",
"remediation": "Confirm you meant \"@sentry/mcp-server\". Install packages only from their documented, official name.",
"location": {
"kind": "package",
"name": "mcp-servers"
},
"owasp": "LLM03:2025 Supply Chain",
"references": [
"https://github.com/ossf/package-analysis",
"https://owasp.org/www-project-top-10-ci-cd-security-risks/"
],
"data": {
"candidate": "mcp-servers",
"target": "@sentry/mcp-server"
}
},
{
"ruleId": "MTC-SUP-005",
"title": "Near-miss of @heroku/mcp-server (edit distance 1)",
"category": "supply-chain",
"severity": "medium",
"confidence": "strong",
"description": "\"mcp-servers\" is edit-distance 1 from the package \"@heroku/mcp-server\". Verify this is the intended package.",
"remediation": "Confirm you meant \"@heroku/mcp-server\". Install packages only from their documented, official name.",
"location": {
"kind": "package",
"name": "mcp-servers"
},
"owasp": "LLM03:2025 Supply Chain",
"references": [
"https://github.com/ossf/package-analysis",
"https://owasp.org/www-project-top-10-ci-cd-security-risks/"
],
"data": {
"candidate": "mcp-servers",
"target": "@heroku/mcp-server"
}
},
{
"ruleId": "MTC-SUP-012",
"title": "Package has no license",
"category": "hygiene",
"severity": "info",
"confidence": "strong",
"description": "\"mcp-servers\" has no declared license. This is a legal/reuse concern, not a security finding.",
"location": {
"kind": "package",
"name": "mcp-servers"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "my_tool",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "54928ad7db1701157835e069d49720ca8099b526fd86c487ba5ecf3175d02609",
"stats": {
"tools": 1,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 3,
"medium": 1,
"low": 0,
"info": 1
}
}
}