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mcp MCP Server Security Report

com.jitsu/mcp

Manage Jitsu data pipelines: destinations, streams, connections, functions, live events.

Security Trust Score
Grade F · Serious issues
Tier 1 · Public sourceHigh confidence · 98%latest v1.0.0 Repository
Declared MCP capabilities
ResourcesPrompts

This server scored F. Run it behind runtime policy enforcement so one bad tool call can't become an incident.

2 issues capping this score
  • criticalNo command-injection sinks — 10 occurrences
  • criticalNo dynamic code execution — 3 occurrences
Reputation4.8kstars359forks27open issuestodaylast commit6yage

Security controlslatest scored version v1.0.0

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

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

  • N/A
    Tool Definition Integrityguardno prior version to diff

    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.

Application Security Checks

  • Fail
    No command-injection sinksguard10 occurrences

    Untrusted tool input reaching a shell yields remote code execution.

    cli/jitsu-cli/src/commands/build.ts:33cli/jitsu-cli/src/lib/body-fields.ts:44dev-scripts/src/commands/copy-db.ts:118env-preload/preload-env.cjs:44

    Fix: Never pass tool arguments to a shell; use argv arrays with shell disabled.

  • Fail
    No dynamic code executionguard3 occurrences

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

    cli/jitsu-cli/src/lib/compiled-function.ts:49services/rotor/src/lib/profile-worker.ts:55services/rotor/src/lib/workspace-worker.ts:66

    Fix: Remove eval/exec; parse and dispatch explicitly.

  • Warn
    No path traversalguard67 occurrences

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

    cli/jitsu-cli/src/commands/login.ts:56cli/jitsu-cli/src/commands/login.ts:57cli/jitsu-cli/src/lib/api-client.ts:26cli/jitsu-cli/src/lib/auth-file.ts:74

    Fix: Resolve to a canonical path and verify containment; reject ../ and symlinks.

  • Warn
    No SSRF sinksguard40 occurrences

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

    cli/jitsu-cli/src/commands/config/handlers.ts:69cli/jitsu-cli/src/commands/config/handlers.ts:114cli/jitsu-cli/src/commands/config/handlers.ts:120cli/jitsu-cli/src/commands/config/handlers.ts:141

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

  • Warn
    No known-vulnerable dependencies72 of 2672 runtime deps vulnerable; worst critical

    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.

    github.com/docker/[email protected]+incompatible — GHSA-pxq6-2prw-chj9github.com/docker/[email protected]+incompatible — GHSA-rg2x-37c3-w2rhgithub.com/docker/[email protected]+incompatible — GHSA-vp62-88p7-qqf5github.com/docker/[email protected]+incompatible — GHSA-x744-4wpc-v9h2

    Fix: Upgrade the flagged dependencies past their fixed versions.

  • 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 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 licenseMIT

    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
    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

  • Warn
    Network Exposurebinds 0.0.0.0

    Binding 0.0.0.0 or exposing debug inspectors widens the attack surface.

    Fix: Bind to 127.0.0.1 by default; never ship open debug endpoints.

  • Pass
    Transport Encryption (TLS)guardall remotes use HTTPS

    Plaintext HTTP exposes traffic and bearer tokens to interception.

  • Pass
    IAM / Authentication ScopingOAuth / PRM handling detected

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

  • Pass
    Execution Sandboxingcontainerized

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

  • 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
v1.0.0latest14Fscored