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chrome-devtools-mcp MCP Server Security Report

chromedevtools/chrome-devtools-mcp
Security Trust Score
Grade B · Moderate posture
Tier 1 · Public sourceHigh confidence · 90%latest vmain@fadbf41 Repository
Declared MCP capabilities
ResourcesPrompts

Run it securely

Host chromedevtools/chrome-devtools-mcp in a governed environment — SSO in front, every tool call attributed and audited.

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The short answer

Is chrome-devtools-mcp safe to use?
chrome-devtools-mcp scores 85/100 (grade B) on the Canopii Trust Index — good, minor gaps. It passes 14 of the 21 security controls that apply to it, with no confirmed security failures.
How reliable is the security score for chrome-devtools-mcp?
We could evaluate 90% of the controls that apply to chrome-devtools-mcp. 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 chrome-devtools-mcp 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.
Reputation49kstars3.4kforks111open issues9d agolast commit<1yage

Security controlslatest scored version vmain@fadbf41

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 command-injection sinksguard3 occurrences (build/test paths only)

    Untrusted tool input reaching a shell yields remote code execution.

    scripts/test.js:73scripts/verify-server-json-version.ts:46scripts/verify-server-json-version.ts:53

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

  • Warn
    No path traversalguard21 occurrences

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

    rollup.config.js:96rollup.config.js:318rollup.config.js:325scripts/eslint_rules/check-license-rule.js:45

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

  • Warn
    No SSRF sinksguard4 occurrences

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

    src/McpContext.ts:881src/bin/check-latest-version.ts:41src/index.ts:85src/telemetry/watchdog/ClearcutSender.ts:203

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

  • Pass
    No dynamic code executionguardno sinks found

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

  • 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 licenseApache-2.0

    A clear license is required for legal enterprise use.

  • Pass
    Has a security policySECURITY.md present

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

  • 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

  • Warn
    Execution Sandboxingruns natively (no container image)

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

    Fix: Ship a Dockerfile/Containerfile (or document a sandboxed run) so the server runs isolated.

  • 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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Canopii Trust Score badge preview
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Versions

VersionScoreStatus
vlatest84Bscored
vmain@d1baa9085Bscored
vmain@2dc104c85Bscored
vmain@45f187b85Bscored
vmain@50a16fa81Bscored
vmain@ebf58f285Bscored
vmain@2ce42f885Bscored
vmain@8f25f6985Bscored
vmain@61e312f85Bscored
vmain@fadbf41latest85Bscored
vmain@1c92ba015Fscored
vmain@fce756a16Fscored
vmain@5d0283916Fscored
vmain@c0a741716Fscored
vmain@b58c61316Fscored
vmain@9ab13a115Fscored
vmain@8028bfe84Bscored

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

chrome-devtools-mcp MCP Server Security — Score 85/100, Grade B · Canopii Trust Index