registry / Install hook abuse / @metaphi-ai/hum / 0.2.0

@metaphi-ai/hum@0.2.0

Hum: a self-improving coding agent for your terminal.

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

This is a concrete automatic remote bootstrap and second-stage package installation path, but the inspected package does not itself show credential theft, exfiltration, or foreign control-surface modification. The risk warrants a warning rather than a malware block.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

Installing the npm package when the Hum core version is not already present.

Impact

Remote installer and Python package code can execute with the installing user's permissions.

Mechanism

Postinstall shell bootstrap and Python package installation.

AI rationale

Evidence

package.jsonscripts/postinstall.jsdist/install.mjs~/.hum/core~/.hum/core-install.json

Network endpoints2

astral.sh/uv/install.ps1astral.sh/uv/install.sh

Decision evidence

public snapshot

AI called this Suspicious at 90.0% confidence as Dangerous Capability with low false-positive risk.

Evidence for warning

The package runs a postinstall script automatically during npm installation.
The postinstall script imports and invokes the core installer when its version is absent.
The installer downloads and executes Astral's uv installer, then installs the separate hum-cli Python package into the user's home directory.

Evidence against

The inspected JavaScript contains no confirmed credential exfiltration or browser credential collection.
The installed files and network activity are scoped to Hum's own core environment rather than a foreign agent configuration.

Behavioral surface

Source

ChildProcessDynamicRequireEnvironmentVarsFilesystemShell

Supply chain

HighEntropyStringsUrlStrings

Manifest

NoLicense

scanned 3 file(s), 264 KB of source, external domains: astral.sh, github.com, react.dev

Oversized source lightweight scan

Source & flagged code

10 flagged

package.jsonView file

Lines 1-13json

2 "name": "@metaphi-ai/hum",

3 "version": "0.2.0",

4 "description": "Hum: a self-improving coding agent for your terminal.",

5 "license": "UNLICENSED",

6 "type": "module",

7 "bin": { "hum": "bin/hum.js" },

8 "files": ["bin", "dist", "scripts"],

9 "scripts": { "postinstall": "node scripts/postinstall.js" },

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L9

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L9

10 "engines": { "node": ">=22" },

11 "repository": { "type": "git", "url": "git+https://github.com/metaphi-labs/humboldt.git" }

12}

dist/install.mjsView file

Lines 1-21javascript

1// src/install.js

2import { spawnSync } from "node:child_process";

3import fs from "node:fs";

High

Child Process

Package source references child process execution.

dist/install.mjsView on unpkg · L1

4import os from "node:os";

bin/hum.jsView file

Lines 1-19javascript

1#!/usr/bin/env node

2// `hum` from npm: the Ink front-end, which starts Hum's core (Python, installed by postinstall

3// via uv) and talks to it over localhost. Everything the person sees is here; everything the

4// session records is in the core.

5import { fileURLToPath, pathToFileURL } from 'node:url';

6import path from 'node:path';

dist/cli.mjsView file

485"use strict"; L486: "production" !== process.env.NODE_ENV && (function() { L487: function defineDeprecationWarning(methodName, info) { ... L624: specialPropKeyWarningShown || (specialPropKeyWarningShown = true, console.error( L625: "%s: `key` is not a prop. Trying to access it will result in `undefined` being returned. If you need to access the same value within the child component, you should pass it as a di... L626: displayName ... L1664: cwdFunction = isBrowser ? () => { L1665: throw new Error("`process.cwd()` only works in Node.js, not the browser."); L1666: } : process2.cwd; ... L1768: } L1769: const imageBuffer = Buffer.from(data); L1770: return wrapOsc(returnValue + `;size=${imageBuffer.byteLength}:` + imageBuffer.toString("base64") + BEL);

Critical

Browser Credential Phishing

Source appears to collect browser login credentials for exfiltration.

dist/cli.mjsView on unpkg · L485

•matchType = previous_version_dangerous_delta matchedPackage = @metaphi-ai/hum@0.1.86 matchedIdentity = npm:QG1ldGFwaGktYWkvaHVt:0.1.86 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.

dist/cli.mjsView on unpkg

88734import fs5 from "node:fs"; L88735: import net from "node:net"; L88736: import os5 from "node:os"; ... L88738: import crypto from "node:crypto"; L88739: import { spawn as spawn2, spawnSync as spawnSync3 } from "node:child_process"; L88740: function uvToolDirs() { L88741: const dirs = []; L88742: if (process.env.UV_TOOL_DIR) dirs.push(process.env.UV_TOOL_DIR); L88743: if (win3) {

Source & flagged code

10 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

dist/install.mjsView file

1// src/install.js L2: import { spawnSync } from "node:child_process"; L3: import fs from "node:fs";

High

Child Process

Package source references child process execution.

dist/install.mjsView on unpkg · L1

Findings

2 Critical6 High4 Medium5 Low

CriticalBrowser Credential Phishingdist/cli.mjs

CriticalPrevious Version Dangerous Deltadist/cli.mjs

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/install.mjs

HighShelldist/install.mjs

HighSame File Env Network Executiondist/cli.mjs

HighRemote Agent Bridgedist/cli.mjs

HighKnown Malware Source Similaritydist/install.mjs

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requirebin/hum.js

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

Affected versions and remediation

This report applies to @metaphi-ai/hum@0.2.0.

See all versions of @metaphi-ai/hum for other recorded verdicts.

Review the evidence and your use of @metaphi-ai/hum@0.2.0 before allowing it. Restrict the permissions described in this report.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.

Evidence last updated: 2026-09-11 23:53:05.420Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.