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auto-chrome-mcp-bridge: Suspicious npm security report (Warn) | LPM Firewall

registry / auto-chrome-mcp-bridge / 1.13.0

auto-chrome-mcp-bridge@1.13.0

Auto Chrome MCP — Chrome Native-Messaging host (Node). Non-interference background work mode, per-session work tabs, Force Reconnect, Playwright CDP fallback.

AI Security Review

scanned 26d ago · by lpm-firewall-ai

LPM treats this as warn-only first-party agent extension lifecycle risk. A global npm install automatically adds a package-controlled Claude Code skill and downloads an unpinned extension archive. This changes the user's agent environment without an explicit setup command.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

Installing the package globally, when a .claude directory exists and the opt-out variable is not set.

Impact

Future Claude Code conversations can be influenced by the installed skill, and the downloaded extension can change independently of this package snapshot.

Mechanism

Postinstall copies a Claude Code skill and retrieves a latest-release browser extension.

AI rationale

This is not proven malware, but it automatically modifies a third-party agent control surface and fetches an unpinned extension during install. Those behaviors warrant a warning rather than publication blocking under the lifecycle policy.

Evidence

package.jsondist/scripts/postinstall.jsdist/skill/SKILL.md~/.claude/skills/auto-chrome-mcp-doctor/SKILL.md~/.auto-chrome-mcp/extension.zip~/Downloads/auto-chrome-mcp-extension-v<version>

Network endpoints1

github.com/cw02326/auto-chrome-mcp/releases/latest/download/auto-chrome-mcp-extension.zip

Source & flagged code

13 flagged · loading source

package.jsonView file

•scripts.postinstall = node -e "const f='dist/scripts/postinstall.js';require('fs').existsSync(f)&&require('child_process').execFileSync(process.execPath,[f],{stdio:'inherit'})"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•matchType = normalized_sha256 matchedPackage = auto-chrome-mcp-bridge@1.11.0 matchedPath = package.json matchedIdentity = npm:YXV0by1jaHJvbWUtbWNwLWJyaWRnZQ:1.11.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

package.jsonView on unpkg

•scripts.postinstall = node -e "const f='dist/scripts/postinstall.js';require('fs').existsSync(f)&&require('child_process').execFileSync(process.execPath,[f],{stdio:'inherit'})"

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/run_host.shView file

•path = dist/run_host.sh kind = build_helper sizeBytes = 9885 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

dist/run_host.shView on unpkg

dist/scripts/postinstall.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 2

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

dist/scripts/postinstall.js#virtual:normalized:round1View on unpkg

dist/scripts/postinstall.jsView file

•matchType = normalized_sha256 matchedPackage = auto-chrome-mcp-bridge@1.11.0 matchedPath = dist/scripts/postinstall.js matchedIdentity = npm:YXV0by1jaHJvbWUtbWNwLWJyaWRnZQ:1.11.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/scripts/postinstall.jsView on unpkg

dist/scripts/utils.jsView file

•matchType = normalized_sha256 matchedPackage = auto-chrome-mcp-bridge@1.11.0 matchedPath = dist/scripts/utils.js matchedIdentity = npm:YXV0by1jaHJvbWUtbWNwLWJyaWRnZQ:1.11.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/scripts/utils.jsView on unpkg

dist/scripts/browser-config.jsView file

•matchType = normalized_sha256 matchedPackage = auto-chrome-mcp-bridge@1.11.0 matchedPath = dist/scripts/browser-config.js matchedIdentity = npm:YXV0by1jaHJvbWUtbWNwLWJyaWRnZQ:1.11.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/scripts/browser-config.jsView on unpkg

dist/mcp/mcp-server-stdio.jsView file

•matchType = normalized_sha256 matchedPackage = auto-chrome-mcp-bridge@1.11.0 matchedPath = dist/mcp/mcp-server-stdio.js matchedIdentity = npm:YXV0by1jaHJvbWUtbWNwLWJyaWRnZQ:1.11.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/mcp/mcp-server-stdio.jsView on unpkg

dist/file-handler.jsView file

•matchType = normalized_sha256 matchedPackage = auto-chrome-mcp-bridge@1.11.0 matchedPath = dist/file-handler.js matchedIdentity = npm:YXV0by1jaHJvbWUtbWNwLWJyaWRnZQ:1.11.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/file-handler.jsView on unpkg

dist/transports/playwright/cdp-client.jsView file

•matchType = normalized_sha256 matchedPackage = auto-chrome-mcp-bridge@1.11.0 matchedPath = dist/transports/playwright/cdp-client.js matchedIdentity = npm:YXV0by1jaHJvbWUtbWNwLWJyaWRnZQ:1.11.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/transports/playwright/cdp-client.jsView on unpkg

dist/server/routes/admin.jsView file

•matchType = normalized_sha256 matchedPackage = auto-chrome-mcp-bridge@1.11.0 matchedPath = dist/server/routes/admin.js matchedIdentity = npm:YXV0by1jaHJvbWUtbWNwLWJyaWRnZQ:1.11.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/server/routes/admin.jsView on unpkg

dist/scripts/report.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = auto-chrome-mcp-bridge@1.12.0 matchedIdentity = npm:YXV0by1jaHJvbWUtbWNwLWJyaWRnZQ:1.12.0 similarity = 0.923 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

dist/scripts/report.jsView on unpkg