registry / @copilot-mcp/apex / 1.0.18

@copilot-mcp/apex@1.0.18

AI Security Review

scanned 24d ago · by lpm-firewall-ai

npm postinstall downloads platform binaries. On macOS it downloads and executes apex-helper-darwin without integrity verification; failed binary-hash verification is non-fatal.

Static reason

One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source

Trigger

npm install (postinstall); --mcp-stdio for runtime npx fallback

Impact

A compromised or substituted release asset can execute code with the installing user's privileges.

Mechanism

postinstall remote binary download and execution

Rationale

The package contains an unsafe remote executable loader at install time, but no inspected source establishes credential theft, destructive behavior, or AI-agent configuration hijacking. Treat as a critical vulnerability requiring warning rather than a confirmed malicious package.

Evidence

package.jsoninstall.cjsapex.cjsREADME.mdbin/apexbin/apex.sha256~/.apex/apex-helper~/.apex/natives/16.3.6/pi_natives.win32-x64-baseline.node

Network endpoints2

github.com/Apex-Foundation/copilot/releases/download/v1.0.0/apex-helper-darwingithub.com/Apex-Foundation/copilot/releases/download/v1.0.0/

Decision evidence

public snapshot

AI called this Suspicious at 93.0% confidence as Critical Vulnerability with low false-positive risk.

Evidence for warning

package.json runs install.cjs as postinstall.
install.cjs downloads and executes an unverified macOS helper during install.
Hash-download failure only warns, leaving the downloaded executable in place.
apex.cjs runs npx -y @apexfdn/copilot-mcp in explicit MCP mode.

Evidence against

No source reads credentials or exfiltrates local data.
README.md only documents MCP configuration; package code does not modify agent configs.
Network URLs are fixed GitHub release URLs, not attacker-supplied input.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetwork

Supply chain

UrlStrings

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 5.19 KB of source, external domains: github.com

Source & flagged code

5 flagged

package.jsonView file

•scripts.postinstall = node install.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node install.cjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

apex.cjsView file

1#!/usr/bin/env node L2: const { spawnSync } = require('child_process') L3: const { join } = require('path')

High

Child Process

Package source references child process execution.

apex.cjsView on unpkg · L1

15} catch { L16: const result = spawnSync('npx', ['-y', '@apexfdn/copilot-mcp'], { L17: stdio: 'inherit',

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

apex.cjsView on unpkg · L15

install.cjsView file

•matchType = previous_version_dangerous_delta matchedPackage = @copilot-mcp/apex@1.0.16 matchedIdentity = npm:QGNvcGlsb3QtbWNwL2FwZXg:1.0.16 similarity = 0.500 summary = stored previous version shares package body but lacks this dangerous source file

Critical

Previous Version Dangerous Delta

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

install.cjsView on unpkg

Source & flagged code

5 flagged · loading source

package.jsonView file

•scripts.postinstall = node install.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node install.cjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

apex.cjsView file

1#!/usr/bin/env node L2: const { spawnSync } = require('child_process') L3: const { join } = require('path')

High

Child Process

Package source references child process execution.

apex.cjsView on unpkg · L1

15} catch { L16: const result = spawnSync('npx', ['-y', '@apexfdn/copilot-mcp'], { L17: stdio: 'inherit',

Findings

1 Critical3 High4 Medium3 Low

CriticalPrevious Version Dangerous Deltainstall.cjs

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processapex.cjs

HighRuntime Package Installapex.cjs

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowUrl Strings