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jupyter-mcp-server MCP Server Security Report

datalayer/jupyter-mcp-server

🪐 🔧 Model Context Protocol (MCP) Server for Jupyter.

Security Trust Score
Grade A · Strong posture
Tier 1 · Public sourceHigh confidence · 90%latest vmain@b85e6c5 Repository
Declared MCP capabilities

Run it securely

Host datalayer/jupyter-mcp-server in a governed environment — SSO in front, every tool call attributed and audited.

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The short answer

Is jupyter-mcp-server safe to use?
jupyter-mcp-server scores 94/100 (grade A) on the Canopii Trust Index — strong posture. It passes 16 of the 21 security controls that apply to it, with no confirmed security failures.
How reliable is the security score for jupyter-mcp-server?
We could evaluate 90% of the controls that apply to jupyter-mcp-server. Scores are deterministic — the same source always produces the same score — and a partially-scannable server cannot present a high one, because confidence caps the result. The scanner is open source, so this score can be reproduced independently.
How was jupyter-mcp-server scored?
Its published source was scanned against a fixed catalog of weighted security controls covering code safety, committed secrets, dependency vulnerabilities, tool-description integrity, authentication and transport, and maintenance. A confirmed flaw caps the score outright regardless of what else passes. The full rubric is published.
Reputation1.3kstars210forks31open issues2d agolast commit2yage

Security controlslatest scored version vmain@b85e6c5

Each control is evaluated deterministically with evidence. The score is earned from passing controls; a failed guard caps it.

Model–MCP Runtime Guardrails

  • Warn
    Strict JSON Schema Enforcementschemas not strict

    Tool inputs are constrained (additionalProperties:false), so unexpected arguments can't be smuggled in.

    Fix: Set additionalProperties:false and require explicit parameters on every tool.

  • Pass
    Indirect Prompt Injection (IPI) Defensesguardno injection markers

    Tool/prompt/resource text is free of hidden instructions that could hijack the agent.

  • Pass
    Tool Definition Integrityguardtool definitions stable; no risky changes in version history

    Every consecutive version pair is diffed for new injection markers or destructive scope — a risky diff anywhere in history is a rug-pull (fail, durable); benign description drift warns.

  • Pass
    User-in-the-Loop / Approval Scopeguardno destructive tool scope

    No over-broad or destructive tools (arbitrary shell, bulk-delete) that warrant human approval.

Application Security Checks

  • Warn
    No SSRF sinksguard3 occurrences

    Fetching tool-supplied URLs can pivot into internal networks and metadata services.

    examples/cli/conftest.py:54jupyter_mcp_server/notebook_manager.py:75jupyter_mcp_server/tools/connect_jupyter_tool.py:40

    Fix: Allow-list destinations; reject arbitrary/loopback/link-local URLs.

  • Warn
    Has a security policyno security policy

    A SECURITY.md gives a private path to report vulnerabilities.

    Fix: Add SECURITY.md with a disclosure contact and process.

  • Pass
    No command-injection sinksguardno sinks found

    Untrusted tool input reaching a shell yields remote code execution.

  • Pass
    No dynamic code executionguardno sinks found

    eval()/exec()/Function() on tool-derived strings allows arbitrary code execution.

  • Pass
    No path traversalguardno sinks found

    Naive path checks let tools read/write outside intended directories (EscapeRoute-class).

  • Pass
    No unsafe deserializationguardno sinks found

    pickle/yaml.load/etc. on untrusted data can execute code.

  • Pass
    No committed secretsguardno secrets found

    Hardcoded keys/tokens in published source are live credentials an attacker can use.

  • Pass
    Credentials sourced from environmentreads credentials from environment

    Reading secrets from env/secret stores avoids hardcoding them.

  • Pass
    Dependencies pinned (lockfile)lockfile present

    A lockfile makes installs reproducible and resistant to silent dependency swaps.

  • Pass
    Actively maintainedrecent commits

    Unmaintained servers don't receive security fixes.

  • Pass
    Repository not archivedguardactive

    Archived repositories will never be patched.

  • Pass
    Declares a licenseBSD-3-Clause

    A clear license is required for legal enterprise use.

  • Pass
    Adoption & popularityestablished adoption

    A small, capped nudge from stars/downloads — widely-used servers get more eyes on bugs. It can never offset a real security failure.

  • Not checked
    No known-vulnerable dependenciesno lockfile found

    Runtime dependencies (parsed from the lockfile) are scanned against OSV.dev for published CVEs. Advisory: flagged dependencies lower the score but don't hard-cap it, since transitive reachability is unproven.

  • Not checked
    Signed releasesnot evaluated

    Signed releases let consumers verify artifacts weren't tampered with.

  • N/A
    No install/post-install scriptsguardno published package

    install hooks run arbitrary code on every consumer at install time.

  • N/A
    Package name not typosquattingguardno published package

    Names mimicking popular packages are a common malware delivery vector.

  • N/A
    Published with provenanceno published package

    Build provenance attests the artifact was built from the claimed source by CI.

  • N/A
    Established maintainerno published package

    Brand-new / single anonymous maintainers raise takeover and malware risk.

Transport & Trust Model

  • Pass
    Execution Sandboxingcontainerized

    A container/sandbox image limits blast radius; a server that runs natively has full host access.

  • Pass
    Network Exposureno bind-all detected

    Binding 0.0.0.0 or exposing debug inspectors widens the attack surface.

  • N/A
    Transport Encryption (TLS)guardno remote endpoints

    Plaintext HTTP exposes traffic and bearer tokens to interception.

  • N/A
    IAM / Authentication Scopingno remote endpoints

    OAuth 2.1 / Protected Resource Metadata gates who can invoke tools.

  • N/A
    Live Endpoint Reachablenot dynamically scanned

    A dynamic scan connected to the declared remote endpoint and it responded — verified live, not a dead URL.

  • N/A
    Authentication Enforced (live)not dynamically scanned

    If the server declares auth is required, it must actually reject anonymous clients. Serving tools to unauthenticated callers is a real exposure.

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Versions

VersionScoreStatus
vmain@b85e6c5latest94Ascored
vmain@ec66cb894Ascored
vmain@d95c40594Ascored
vmain@ef47e8b94Ascored
vmain@c32068294Ascored
vmain@e7e8ae294Ascored
vmain@6184a1e94Ascored
vmain@877ddff95Ascored
vmain@08e731c95Ascored
vmain@0679d3c95Ascored
vmain@da196f295Ascored
vmain@416c99895Ascored
vmain@cc60dc295Ascored
vmain@bee12c295Ascored
vmain@dfdb62795Ascored
vmain@338fd6995Ascored
vmain@a064afb93Ascored
vmain@5750cd993Ascored
vmain@2e42e5a92Ascored
vmain@2b1420e93Ascored
vmain@a48087893Ascored
vmain@a25915593Ascored
vmain@a3ae1eb93Ascored
vmain@dd8bc6293Ascored
vmain@9fcc4f693Ascored
vmain@bcfbc6c93Ascored
vmain@8f09bbc93Ascored
vmain@3aa8cfd93Ascored
vmain@da4064593Ascored
vmain@7eb4e7c93Ascored
vmain@07ccd3d93Ascored
vmain@47a781392Ascored
vmain@3a07ac693Ascored
vmain@9bd11ab93Ascored
vmain@72ee61293Ascored
vmain@87ed23292Ascored
vmain@298a85e91Ascored
vmain@39022e794Ascored
vmain@990800194Ascored
vmain@9c2a4a094Ascored
vmain@ca89f0194Ascored
vmain@f6fdde994Ascored
vmain@280d1c894Ascored
vmain@b4103a394Ascored
vmain@6bb9e5a94Ascored
vmain@350757e93Ascored
vmain@90184b594Ascored
vmain@1ef626094Ascored
vmain@4a9810894Ascored
vmain@cf707a194Ascored
vmain@74b03fd93Ascored

Wondering how this compares? The MCP Security Index tracks grade distribution, committed secrets, and missing authentication across the whole ecosystem, refreshed monthly.