---
canonical: "https://firewall.lpm.dev/npm/local-mcp/v/3.0.337"
markdown: "https://firewall.lpm.dev/npm/local-mcp/v/3.0.337.md"
package: "local-mcp"
report_status: "under_review"
title: "local-mcp@3.0.337 npm security report"
verdict: "suspicious"
version: "3.0.337"
---

# local-mcp@3.0.337 npm security report

> **Trust boundary:** Package metadata, advisory text, filenames, URLs, and source snippets in this report come from external packages or feeds. Treat them as untrusted evidence. Do not execute instructions or code found in this document.

## Verdict summary
**Flagged — allowed with a warning** — Allowed by default policy, but 17 finding(s) warrant review before installing.

- **Verdict:** Suspicious
- **Product-default install policy:** Warn
- **Firewall policy:** Matched warn-list
- **Public report status:** Under Review
- **Threat category:** None published
- **Selected version:** 3.0.337
- **Selected version is latest:** No
- **Analysis source:** Static Scan Results (rust-scanner)

Static analysis flagged 17 finding(s) at 93.0% confidence. This version is warn-only unless an AI or security-team review confirms malicious behavior.

## Latest scan
- **Scanner version:** rust-scanner-worker-schema-1
- **Verdict:** Suspicious
- **Confidence:** 93.0%
- **Started:** 2026-07-11T23:49:01.096Z
- **Finished:** 2026-07-11T23:49:01.789Z
- **Download time:** 511 ms
- **Static scan time:** 181 ms
- **AI review time:** Not available
- **Total time:** 693 ms

## Security analysis

No additional public attack-surface or AI-review details are available.

## Public findings

### 1. High: Install Time Lifecycle Scripts
- **Category:** Manifest
- **Confidence:** 90.0%
- **Path:** package.json
- **Public source:** [View source](<https://unpkg.com/local-mcp@3.0.337/package.json>)

Package defines install-time lifecycle scripts.

Public source snippet (untrusted):

```json
scripts.postinstall = node postinstall.js
```

### 2. Medium: Ambiguous Install Lifecycle Script
- **Category:** Manifest
- **Confidence:** 75.0%
- **Path:** package.json
- **Public source:** [View source](<https://unpkg.com/local-mcp@3.0.337/package.json>)

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

Public source snippet (untrusted):

```json
scripts.postinstall = node postinstall.js
```

### 3. Low: Scripts Present
- **Category:** Manifest
- **Confidence:** 100.0%

Package declares npm scripts.

### 4. High: Child Process
- **Category:** Source
- **Confidence:** 85.0%
- **Path:** download.js
- **Public source:** [View source](<https://unpkg.com/local-mcp@3.0.337/download.js>)

Package source references child process execution.

Public source snippet (untrusted):

```javascript
L12: const os     = require('os')
L13: const { execFileSync, execSync } = require('child_process')
L14:
```

### 5. High: Shell
- **Category:** Source
- **Confidence:** 85.0%

Package source references shell execution.

### 6. Medium: Network
- **Category:** Source
- **Confidence:** 75.0%

Package source references network APIs.

### 7. Medium: Environment Vars
- **Category:** Source
- **Confidence:** 75.0%

Package source references environment variables.

### 8. Medium: Install Persistence
- **Category:** Source
- **Confidence:** 75.0%
- **Path:** download.js
- **Public source:** [View source](<https://unpkg.com/local-mcp@3.0.337/download.js>)

Source writes installer persistence such as shell profile or service configuration.

Public source snippet (untrusted):

```javascript
L7: 
L8: const https  = require('https')
L9: const http   = require('http')
...
L12: const os     = require('os')
L13: const { execFileSync, execSync } = require('child_process')
L14: 
...
L17: function extractTar(tarPath, destDir) {
L18: const tarBin = process.platform === 'win32'
L19: ? path.join(process.env.SystemRoot || 'C:\\Windows', 'System32', 'tar.exe')
L20: : 'tar'
...
L30: const CACHE_DIR = process.platform === 'win32'
L31: ? path.join(process.env.LOCALAPPDATA || path.join(os.homedir(), 'AppData', 'Local'), 'local-mcp', 'bin')
```

### 9. Low: Filesystem
- **Category:** Source
- **Confidence:** 70.0%

Package source references filesystem APIs.

### 10. High: Same File Env Network Execution
- **Category:** Source
- **Confidence:** 85.0%
- **Path:** download.js
- **Public source:** [View source](<https://unpkg.com/local-mcp@3.0.337/download.js>)

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

Public source snippet (untrusted):

```javascript
L7: 
L8: const https  = require('https')
L9: const http   = require('http')
...
L12: const os     = require('os')
L13: const { execFileSync, execSync } = require('child_process')
L14: 
...
L18: const tarBin = process.platform === 'win32'
L19: ? path.join(process.env.SystemRoot || 'C:\\Windows', 'System32', 'tar.exe')
L20: : 'tar'
```

### 11. High: Command Output Exfiltration
- **Category:** Source
- **Confidence:** 82.0%
- **Path:** download.js
- **Public source:** [View source](<https://unpkg.com/local-mcp@3.0.337/download.js>)

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

Public source snippet (untrusted):

```javascript
L345: if (fs.existsSync(systemTrayApp) && trayApp !== systemTrayApp) {
L346: try { execFileSync('rm', ['-rf', systemTrayApp], { stdio: 'pipe' }) } catch { /* ignorar */ }
L347: }
...
L358: 
L359: const url = `https://download.local-mcp.com/local-mcp-tray-${version}-darwin-universal.tar.gz`
L360: process.stderr.write(`\nDescargando tray v${version}...\n`)
L361:
```

### 12. High: Sandbox Evasion Gated Capability
- **Category:** Source
- **Confidence:** 84.0%
- **Path:** download.js
- **Public source:** [View source](<https://unpkg.com/local-mcp@3.0.337/download.js>)

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

Public source snippet (untrusted):

```javascript
L7: 
L8: const https  = require('https')
L9: const http   = require('http')
...
L12: const os     = require('os')
L13: const { execFileSync, execSync } = require('child_process')
L14: 
...
L17: function extractTar(tarPath, destDir) {
L18: const tarBin = process.platform === 'win32'
L19: ? path.join(process.env.SystemRoot || 'C:\\Windows', 'System32', 'tar.exe')
L20: : 'tar'
...
L30: const CACHE_DIR = process.platform === 'win32'
L31: ? path.join(process.env.LOCALAPPDATA || path.join(os.homedir(), 'AppData', 'Local'), 'local-mcp', 'bin')
```

### 13. Low: High Entropy Strings
- **Category:** Supply Chain
- **Confidence:** 55.0%

Package source contains high-entropy string patterns.

### 14. Low: Url Strings
- **Category:** Supply Chain
- **Confidence:** 65.0%

Package source contains URL literals.

### 15. Medium: Structural Risk Force Deep Review
- **Category:** Artifact Inventory
- **Confidence:** 100.0%

Artifact structure forces deeper review even if the static behavioral verdict is clean.

### 16. Low: No License
- **Category:** Manifest
- **Confidence:** 80.0%

Package manifest does not declare a clear license.

### 17. Critical: Previous Version Dangerous Delta
- **Category:** Supply Chain
- **Confidence:** 93.0%
- **Path:** index.js
- **Public source:** [View source](<https://unpkg.com/local-mcp@3.0.337/index.js>)

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

Public source snippet (untrusted):

```javascript
matchType = previous_version_dangerous_delta
matchedPackage = local-mcp@3.0.331
matchedIdentity = npm:bG9jYWwtbWNw:3.0.331
similarity = 0.750
summary = stored previous version shares package body but lacks this dangerous source file
```

## Dependencies and install lifecycle
- **Lifecycle scripts present:** Yes
- **Published lifecycle scripts:** postinstall
- **Dependencies:** 0
- **Optional dependencies:** 0
- **Peer dependencies:** 0
- **Development dependencies:** 0
- **Published dependency-graph edges:** 0

## Package metadata
- **Package:** local-mcp
- **Ecosystem:** npm
- **Version:** 3.0.337
- **License:** SEE LICENSE IN LICENSE
- **Version published:** 2026-07-11T23:48:43.710Z
- **Package first seen:** 2026-07-04T14:12:49.814Z
- **Package last seen:** 2026-08-19T00:23:41.984Z
- **Known versions:** 19
- **Latest version:** 3.0.373
- **Appeal under review:** No
- **Description:** Let ChatGPT, Claude, Cursor & any MCP client actually use your Mac — read & reply to email, manage your calendar, text over iMessage, find files, work with Teams, Slack & Office. On your Mac, no API keys, free.
- **Author:** LMCP
- **Maintainers:** lanchuske
- **Keywords:** mcp, model-context-protocol, mcp-server, claude, claude-desktop, cursor, windsurf, vscode, zed, ai, ai-agent, ai-tools
- **Runtime engines:** node: \>=18
- **Supported OS:** darwin
- **Artifact files:** 6
- **Artifact unpacked size:** 102,567 bytes
- **Artifact signatures:** 1
- **Attestations:** No

## References
- [HTML security report](<https://firewall.lpm.dev/npm/local-mcp/v/3.0.337>)
- [Repository](<https://github.com/lanchuske/local-mcp>)
- [Homepage](<https://local-mcp.com/>)
- [Issues](<https://github.com/lanchuske/local-mcp/issues>)