io.github.cameronrye/openzim-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

  warn15% of grade

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

  tests/test_cursor_decode.py: assigns a literal to token (!!!n…!! (len 16)) — non-provider secret literal; prefer environment intake. tests/test_sdk_seam_audit.py: assigns a literal to secret (n0tf…im (len 37)) — non-provider secret literal; prefer environment intake. Reads secrets from the environment (e.g. openzim_mcp/cache.py) — the recommended intake shape.

• Permission scope

  warn15% of grade

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

  discloses broad/destructive filesystem access: 7 files (openzim_mcp/cache.py, openzim_mcp/linkgraph/builder.py, openzim_mcp/onboarding.py, +4 more) 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 3.2.5 (minor bump): new capability primitive(s) in source: child_process, fs-write, http-client, subprocess; new hardcoded outbound host/BCC destination(s): 127.0.0.1, allowed.example.com, app.example.com, browse.library.kiwix.org, cameronrye.github.io, chat.example.com, e.com, en.wikipedia.org, en.wiktionary.org, errors.pydantic.dev, evil.com, evil.example, evil.x, example, example.com, example.org, external.com, foo.org, github.com, h, iep.utm.edu, ok.example, raw.githubusercontent.com, real.example, www.mediawiki.org.

• 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 telemetry behavior — disclosure