M365 — 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": "m365-mcp",
"source": {
"kind": "package",
"origin": "m365-mcp"
},
"server": {
"name": "m365-mcp"
}
},
"grade": "A",
"score": {
"score": 96,
"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": "moderate",
"label": "capability blast radius (moderate) — client exposure if the model is manipulated",
"appliedPenalty": 3
},
{
"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": "moderate",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)"
],
"tags": [
"untrusted-input"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (56 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 packaging/dev tooling (tests/conftest.py)",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "In a packaging/dev/install script (shipped, but not the server runtime) (`tests/conftest.py:191`): 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": "tests/conftest.py"
},
"evidence": "check_result = subprocess.run( [\"sudo\", \"netstat\", \"-tunlp\"], capture_o",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "tests/conftest.py",
"line": 191,
"nonRuntime": true
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "account_list",
"tags": [],
"reasons": {}
},
{
"tool": "account_authenticate",
"tags": [],
"reasons": {}
},
{
"tool": "account_complete_auth",
"tags": [],
"reasons": {}
},
{
"tool": "cache_task_get_status",
"tags": [],
"reasons": {}
},
{
"tool": "cache_task_list",
"tags": [],
"reasons": {}
},
{
"tool": "cache_get_stats",
"tags": [],
"reasons": {}
},
{
"tool": "cache_invalidate",
"tags": [],
"reasons": {}
},
{
"tool": "cache_warming_status",
"tags": [],
"reasons": {}
},
{
"tool": "calendar_list_events",
"tags": [],
"reasons": {}
},
{
"tool": "calendar_get_event",
"tags": [],
"reasons": {}
},
{
"tool": "calendar_create_event",
"tags": [],
"reasons": {}
},
{
"tool": "calendar_update_event",
"tags": [],
"reasons": {}
},
{
"tool": "calendar_delete_event",
"tags": [],
"reasons": {}
},
{
"tool": "calendar_respond_event",
"tags": [],
"reasons": {}
},
{
"tool": "calendar_check_availability",
"tags": [],
"reasons": {}
},
{
"tool": "contact_list",
"tags": [],
"reasons": {}
},
{
"tool": "contact_get",
"tags": [],
"reasons": {}
},
{
"tool": "contact_create",
"tags": [],
"reasons": {}
},
{
"tool": "contact_update",
"tags": [],
"reasons": {}
},
{
"tool": "contact_delete",
"tags": [],
"reasons": {}
},
{
"tool": "email_list",
"tags": [],
"reasons": {}
},
{
"tool": "email_get",
"tags": [],
"reasons": {}
},
{
"tool": "email_create_draft",
"tags": [],
"reasons": {}
},
{
"tool": "email_send",
"tags": [],
"reasons": {}
},
{
"tool": "email_update",
"tags": [],
"reasons": {}
},
{
"tool": "email_delete",
"tags": [],
"reasons": {}
},
{
"tool": "email_move",
"tags": [],
"reasons": {}
},
{
"tool": "email_reply",
"tags": [],
"reasons": {}
},
{
"tool": "reply_all_email",
"tags": [],
"reasons": {}
},
{
"tool": "email_get_attachment",
"tags": [],
"reasons": {}
},
{
"tool": "emailfolders_list",
"tags": [],
"reasons": {}
},
{
"tool": "emailfolders_get",
"tags": [],
"reasons": {}
},
{
"tool": "emailfolders_get_tree",
"tags": [],
"reasons": {}
},
{
"tool": "emailrules_list",
"tags": [],
"reasons": {}
},
{
"tool": "emailrules_get",
"tags": [],
"reasons": {}
},
{
"tool": "emailrules_create",
"tags": [],
"reasons": {}
},
{
"tool": "emailrules_update",
"tags": [],
"reasons": {}
},
{
"tool": "emailrules_delete",
"tags": [],
"reasons": {}
},
{
"tool": "emailrules_move_top",
"tags": [],
"reasons": {}
},
{
"tool": "emailrules_move_bottom",
"tags": [],
"reasons": {}
},
{
"tool": "emailrules_move_up",
"tags": [],
"reasons": {}
},
{
"tool": "emailrules_move_down",
"tags": [],
"reasons": {}
},
{
"tool": "file_list",
"tags": [],
"reasons": {}
},
{
"tool": "file_get",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"download\""
]
}
},
{
"tool": "file_create",
"tags": [],
"reasons": {}
},
{
"tool": "file_update",
"tags": [],
"reasons": {}
},
{
"tool": "file_delete",
"tags": [],
"reasons": {}
},
{
"tool": "folder_list",
"tags": [],
"reasons": {}
},
{
"tool": "folder_get",
"tags": [],
"reasons": {}
},
{
"tool": "folder_get_tree",
"tags": [],
"reasons": {}
},
{
"tool": "search_files",
"tags": [],
"reasons": {}
},
{
"tool": "search_emails",
"tags": [],
"reasons": {}
},
{
"tool": "search_events",
"tags": [],
"reasons": {}
},
{
"tool": "search_contacts",
"tags": [],
"reasons": {}
},
{
"tool": "search_unified",
"tags": [],
"reasons": {}
},
{
"tool": "server_get_version",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "c742656260461f2e36982722d62e2ea4583d333688da3f95fd14c680b601ef7f",
"stats": {
"tools": 56,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 0,
"low": 1,
"info": 0
}
}
}