io.github.getnable/finops-mcp

What we checked

Six static checks, weighted by risk. Every result reflects only what could be observed in the published package and repository — never intent.

• Injection surface

  unscannable25% of grade

  Tool descriptions/manifest scanned for instruction-injection patterns (imperatives at the model, hidden text, 'ignore previous', data-exfil URLs).

  No tool descriptions, server instructions, prompts, or resources were fetched; nothing to scan for injection.

• Supply chain

  fail25% of grade

  Package provenance: namespace verification, repo linkage, maintainer count, account age, postinstall scripts, typosquat distance.

  Python build script executes at build time: network call in build script

• Credential hygiene

  pass15% of grade

  How the server takes secrets (env vs plaintext config vs hardcoded); secrets appearing in tool schemas.

  Reads secrets from the environment (e.g. src/finops/accounts.py) — the recommended intake shape. PASS = no static red flag; static analysis cannot prove the code honors env-based secret handling at runtime.

• Permission scope

  fail15% of grade

  Declared tools vs. breadth (filesystem, network, exec); flags shell-exec and unbounded filesystem access.

  HIGH: src/finops/cli_scan.py: references a sensitive credential path (.aws/credentials) — the tool-poisoning exfiltration target. HIGH: src/finops/server.py: references a sensitive credential path (/.ssh/) — the tool-poisoning exfiltration target. HIGH: src/finops/setup_wizard.py: references a sensitive credential path (.aws/credentials) — the tool-poisoning exfiltration target. HIGH: src/finops/analyzers/optimizer.py: references a sensitive credential path (.aws/credentials) — the tool-poisoning exfiltration target. HIGH: src/finops/setup/cloud_infra.py: references a sensitive credential path (.aws/credentials) — the tool-poisoning exfiltration target. HIGH: shell/exec capability AND network egress together — download-and-execute risk (src/finops/setup_wizard.py: subprocess.* call; src/finops/doctor.py: outbound HTTP/socket call). HIGH: shell/exec capability AND destructive filesystem writes together (src/finops/setup_wizard.py: subprocess.* call; src/finops/server.py: path traversal ('../') combined with file access). discloses shell/exec capability: src/finops/setup_wizard.py: subprocess.* call discloses shell/exec capability: src/finops/connectors/terraform.py: subprocess.* call discloses shell/exec capability: src/finops/connectors/terraform_estimate.py: subprocess.* call discloses shell/exec capability: src/finops/remediation/rightsizing_pr.py: subprocess.* call discloses shell/exec capability: src/finops/tagging/tf_state.py: subprocess.* call discloses shell/exec capability: src/finops/tools/notifications.py: subprocess.* call discloses shell/exec capability: src/finops/tools/tickets.py: subprocess.* call discloses dynamic code execution: src/finops/scan_assembler.py: uses eval/exec/__import__ discloses dynamic code execution: src/finops/connectors/aws.py: uses eval/exec/__import__ discloses dynamic code execution: src/finops/security/oauth/gcp.py: uses eval/exec/__import__ discloses broad/destructive filesystem access: src/finops/server.py: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/finops/setup_wizard.py: open(…, 'w'/'a'/'x') write-mode file access discloses broad/destructive filesystem access: src/finops/setup_wizard.py: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/finops/analytics/benchmarks.py: open(…, 'w'/'a'/'x') write-mode file access discloses broad/destructive filesystem access: src/finops/cleanup/actions.py: open(…, 'w'/'a'/'x') write-mode file access discloses broad/destructive filesystem access: src/finops/connectors/azure_detail.py: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/finops/connectors/github_contributions.py: path traversal ('../') combined with file access discloses broad/destructive filesystem access: src/finops/scheduler/jobs.py: open(…, 'w'/'a'/'x') write-mode file access discloses broad/destructive filesystem access: src/finops/setup/cloud_infra.py: path traversal ('../') combined with file access Capability DISCLOSURE, not a verdict: static analysis sees the primitive is present and reachable, not whether its use is attacker-controlled.

• Version behavior

  pass10% of grade

  Diff of tool definitions between versions; new permissions or changed descriptions in a patch release (the postmark-mcp class).

  tool surface, capabilities, install scripts, and publisher unchanged vs prior version 0.8.181 (patch bump); no rug-pull drift.

• Transport config

  warn10% of grade

  Remote servers: TLS and auth mode (none/token/OAuth). Local servers: whether the manifest indicates it phones home.

  sends telemetry to third-party SDK (Datadog) — disclosure, verify opt-in; manifest/source references Telemetry behavior — disclosure