Express Recon — 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": "express-recon",
"source": {
"kind": "package",
"origin": "express-recon"
},
"server": {
"name": "express-recon"
}
},
"grade": "A",
"score": {
"score": 94,
"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": "source",
"label": "publisher verification (provenance) — cryptographic build provenance ties the artifact to its source",
"appliedPenalty": 0
},
{
"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 (14 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/repository.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/repository.js:6`): 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/repository.js"
},
"evidence": "nSync } = require(\"node:child_process\"); const { inventory, audit } = require(\"./harness\"); const { buildReport } = requ",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/repository.js",
"line": 6,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/runtime/execute.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/runtime/execute.js:4`): 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/runtime/execute.js"
},
"evidence": "fork } = require(\"node:child_process\"); const DEFAULT_TIMEOUT_MS = 10_000; const DEFAULT_MAX_OUTPUT_BYTES = 5 * 1024 *",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/runtime/execute.js",
"line": 4,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-005",
"title": "Dynamic module load from a non-literal (src/config.js)",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "In the server's implementation (`src/config.js:203`): Loading a module chosen at runtime (from a variable) can pull in and run attacker-influenced code paths. 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/config.js"
},
"evidence": "return configObject(require(resolved), resolved); } catch (err) { throw new Error(`Could not load configuratio",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-005",
"file": "src/config.js",
"line": 203,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-005",
"title": "Dynamic module load from a non-literal (src/runtime/worker.js)",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "In the server's implementation (`src/runtime/worker.js:27`): Loading a module chosen at runtime (from a variable) can pull in and run attacker-influenced code paths. 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/runtime/worker.js"
},
"evidence": "{ try { mod = require(appPath); } catch (err) { if (![\"ERR_REQUIRE_ESM\", \"ERR_REQUIRE_ASYNC_MODULE\"]",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-005",
"file": "src/runtime/worker.js",
"line": 27,
"nonRuntime": false
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "discover_repository",
"tags": [],
"reasons": {}
},
{
"tool": "inventory_routes",
"tags": [],
"reasons": {}
},
{
"tool": "audit_routes",
"tags": [],
"reasons": {}
},
{
"tool": "suggest_auth",
"tags": [],
"reasons": {}
},
{
"tool": "openapi_spec",
"tags": [],
"reasons": {}
},
{
"tool": "reconcile_openapi",
"tags": [],
"reasons": {}
},
{
"tool": "refresh_openapi",
"tags": [],
"reasons": {}
},
{
"tool": "query_refresh",
"tags": [],
"reasons": {}
},
{
"tool": "review_middleware",
"tags": [],
"reasons": {}
},
{
"tool": "import_middleware_review",
"tags": [],
"reasons": {}
},
{
"tool": "query_audit",
"tags": [],
"reasons": {}
},
{
"tool": "finding_by_fingerprint",
"tags": [],
"reasons": {}
},
{
"tool": "validate_policies",
"tags": [],
"reasons": {}
},
{
"tool": "report_schema",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "5997a0ad989de7478f95d80203aa931f70fce77aa14dcaa2101ae3615b040306",
"stats": {
"tools": 14,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 2,
"medium": 2,
"low": 0,
"info": 0
}
}
}