Kube Lint — 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": "kube-lint-mcp",
"source": {
"kind": "package",
"origin": "kube-lint-mcp"
},
"server": {
"name": "kube-lint-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": [
"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 (12 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/kube_lint_mcp/argocd_lint.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/kube_lint_mcp/argocd_lint.py:95`): 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/kube_lint_mcp/argocd_lint.py"
},
"evidence": "try: result = subprocess.run( cmd, capture_output=True, text=True, timeout=30, ) i",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/kube_lint_mcp/argocd_lint.py",
"line": 95,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/kube_lint_mcp/dryrun.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/kube_lint_mcp/dryrun.py:72`): 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/kube_lint_mcp/dryrun.py"
},
"evidence": "client_result = subprocess.run( [KUBECTL, *ctx_args, \"apply\", \"--dry-run=client\", *source_args],",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/kube_lint_mcp/dryrun.py",
"line": 72,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/kube_lint_mcp/flux_lint.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/kube_lint_mcp/flux_lint.py:39`): 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/kube_lint_mcp/flux_lint.py"
},
"evidence": "ntexts result = subprocess.run( [KUBECTL, \"config\", \"get-contexts\", \"-o\", \"name\"], captu",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/kube_lint_mcp/flux_lint.py",
"line": 39,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/kube_lint_mcp/helm_lint.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/kube_lint_mcp/helm_lint.py:92`): 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/kube_lint_mcp/helm_lint.py"
},
"evidence": ": lint_result = subprocess.run( lint_cmd, capture_output=True, text=True, timeout=HELM_TIMEOUT",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/kube_lint_mcp/helm_lint.py",
"line": 92,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/kube_lint_mcp/kubeconform_lint.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/kube_lint_mcp/kubeconform_lint.py:120`): 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/kube_lint_mcp/kubeconform_lint.py"
},
"evidence": "try: proc = subprocess.run( cmd, capture_output=True, text=True,",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/kube_lint_mcp/kubeconform_lint.py",
"line": 120,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (src/kube_lint_mcp/kustomize_lint.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/kube_lint_mcp/kustomize_lint.py:72`): 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/kube_lint_mcp/kustomize_lint.py"
},
"evidence": "build_result = subprocess.run( [KUBECTL, \"kustomize\", kustomize_dir], capture_output=Tr",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/kube_lint_mcp/kustomize_lint.py",
"line": 72,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SUP-012",
"title": "Package has no license",
"category": "hygiene",
"severity": "info",
"confidence": "strong",
"description": "\"kube-lint-mcp\" has no declared license. This is a legal/reuse concern, not a security finding.",
"location": {
"kind": "package",
"name": "kube-lint-mcp"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "select_kube_context",
"tags": [],
"reasons": {}
},
{
"tool": "list_kube_contexts",
"tags": [],
"reasons": {}
},
{
"tool": "flux_dryrun",
"tags": [],
"reasons": {}
},
{
"tool": "flux_check",
"tags": [],
"reasons": {}
},
{
"tool": "flux_status",
"tags": [],
"reasons": {}
},
{
"tool": "kustomize_dryrun",
"tags": [],
"reasons": {}
},
{
"tool": "helm_dryrun",
"tags": [],
"reasons": {}
},
{
"tool": "kubeconform_validate",
"tags": [],
"reasons": {}
},
{
"tool": "yaml_validate",
"tags": [],
"reasons": {}
},
{
"tool": "argocd_app_list",
"tags": [],
"reasons": {}
},
{
"tool": "argocd_app_get",
"tags": [],
"reasons": {}
},
{
"tool": "argocd_app_diff",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "7721b6fbcf76aacbdacb6695b02d3a393d8fe3c1b7f1c3f7a148e8ba7f7702dd",
"stats": {
"tools": 12,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 6,
"medium": 0,
"low": 0,
"info": 1
}
}
}