io.github.pvliesdonk/markdown-vault-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: subprocess in build script, network call in build script

• Credential hygiene

  warn15% of grade

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

  tests/test_git.py: assigns a literal to secret (ghp_…yz (len 25)) — non-provider secret literal; prefer environment intake. tests/test_git.py: assigns a literal to secret (ghp_…23 (len 22)) — non-provider secret literal; prefer environment intake. tests/test_git.py: assigns a literal to secret (ghp_…99 (len 21)) — non-provider secret literal; prefer environment intake. Reads secrets from the environment (e.g. src/markdown_vault_mcp/cli.py) — the recommended intake shape.

• Permission scope

  warn15% of grade

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

  has both shell/exec and network egress — capable of download-and-run, though no such path was observed (src/markdown_vault_mcp/git.py: subprocess.* call; src/markdown_vault_mcp/providers.py: outbound HTTP/socket call). has both shell/exec and destructive filesystem writes (src/markdown_vault_mcp/git.py: subprocess.* call; src/markdown_vault_mcp/collection.py: destructive filesystem call (shutil.rmtree/os.remove/etc.)). discloses shell/exec capability: src/markdown_vault_mcp/git.py: subprocess.* call discloses dynamic code execution: src/markdown_vault_mcp/_server_prompts.py: uses eval()/exec() discloses broad/destructive filesystem access: src/markdown_vault_mcp/collection.py: destructive filesystem call (shutil.rmtree/os.remove/etc.) discloses broad/destructive filesystem access: src/markdown_vault_mcp/collection.py: recursive glob ('**') from a broad root Capability DISCLOSURE, not a verdict: static analysis sees the primitive is present and reachable, not whether its use is attacker-controlled.

• Version behavior

  fail10% of grade

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

  vs prior 4.0.0 (minor bump): new capability primitive(s) in source: child_process, fs-write, http-client, subprocess; new hardcoded outbound host/BCC destination(s): api.openai.com, auth.example.com, example.com, github.com, mcp.example.com, myhost, pvliesdonk.github.io, remote-host.

• Transport config

  warn10% of grade

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

  manifest/source references tracking behavior — disclosure