io.github.vaaraio/vaara-server

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_signed_export.py: embeds a PRIVATE KEY block. (in an example/sample file — lower severity, but a real key here still leaks.) Reads secrets from the environment (e.g. src/vaara/audit/sqlite_backend.py) — the recommended intake shape.

• Permission scope

  warn15% of grade

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

  references credential paths: src/vaara/adversarial_classifier.py: references a credential path (.aws/credentials) references credential paths: src/vaara/integrations/discovery.py: references a credential path (/.cursor/) references credential paths: src/vaara/integrations/init_governance.py: references a credential path (/.cursor/) has both shell/exec and network egress — capable of download-and-run, though no such path was observed (src/vaara/integrations/_mcp_upstream.py: subprocess.* call; src/vaara/attestation/_inference_crosscheck.py: outbound HTTP/socket call). has both shell/exec and destructive filesystem writes (src/vaara/integrations/_mcp_upstream.py: subprocess.* call; src/vaara/cli.py: destructive filesystem call (shutil.rmtree/os.remove/etc.)). discloses shell/exec capability: 4 files (src/vaara/integrations/_mcp_upstream.py, src/vaara/integrations/claude_code_hooks.py, src/vaara/integrations/discovery.py, +1 more) discloses broad/destructive filesystem access: src/vaara/cli.py: destructive filesystem call (shutil.rmtree/os.remove/etc.) 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 1.79.0 (minor bump): new capability primitive(s) in source: child_process, fs-write, http-client, net, subprocess; new hardcoded outbound host/BCC destination(s): 0.0.0.0, 0xa9fea9fe, 0xa9fea9feee, 10.0.0.5, 127.0.0.1, 169.254.169.254, 169.254.170.2, 169254169254, 172.16.0.1, 192.168.1.10, 224.0.0.1, 240.0.0.1, 2852039166, 2852039167, 8.8.8.8, a, a.com, agents.example.com, anthropic, api., api.example, api.example.com, api.github.com, api.melious.ai, api.us-east-1.model.example, app.example, app.example.evil.test, b.com, bad.example, builder, console, console.example, console.example.evil.test, ec.europa.eu, elsewhere.test, eur-lex.europa.eu, evil-app.example, evil-console.example, evil.com, evil.example, example.com, example.invalid, example.org, facilitator.example, facilitator.test, freetsa.org, github.com, host, huggingface.co, in-toto.io, kdsintf.amd.com, logs.example, m.example, mailarchive.ietf.org, merchant.example, metadata.google.internal, metrics.example.com, ollama, p, pin.test, proxy, psp.example, pypi.org, qtsa.example.eu, qtsp.example, rebind.test, rekor.sigstore.dev, remote, schema.org, schemas.openid.net, shop.example.com, slsa.dev, test, testserver, timestamp.digicert.com, tl.example.at, tsa.a-trust.at, tsa.example, tsa.example.at, tsa.test, up, uri.etsi.org, vaara.io, www.sitemaps.org, www.w3.org, x, x.io.

• 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