@metaphi-ai/hum@0.2.20

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

AI Security Review

scanned 14d ago · by lpm-firewall-ai

Source inspection confirms an automatic postinstall setup path, including a fallback that executes Astral’s `uv` installer, but the observed operations install Hum’s matching core and stage the same package with scripts disabled. The scanner’s browser credential collection hint was not substantiated by the inspected source, so the package is marked clean.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

The npm postinstall hook runs when the core for this package version is missing or does not match.

Impact

The observed behavior installs package-aligned components; no concrete credential theft, unrelated data exfiltration, or control-surface mutation was established.

Mechanism

The setup may install `uv` from Astral and then install the matching Hum Python core; its staged Hum package install disables lifecycle scripts.

AI rationale

Network endpoints2

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

Decision evidence

public snapshot

AI called this Clean at 86.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

The manifest’s postinstall hook runs the package’s own setup script.
The setup script installs the core only when the current version is not already installed.
The installer uses Astral’s `uv` installer as a fallback and defaults to installing the matching `hum-cli` version.
The installer stages the same Hum package version with lifecycle scripts disabled before moving it into its version directory.
The CLI only completes core installation for npm layouts when an install is needed.

Evidence against

The postinstall hook can execute a downloaded shell installer automatically when `uv` is unavailable.

Behavioral surface

Source

ChildProcessDynamicRequireEnvironmentVarsFilesystemShell

Supply chain

HighEntropyStringsUrlStrings

Manifest

NoLicense

scanned 3 file(s), 271 KB of source, external domains: astral.sh, github.com, react.dev

Source & flagged code

9 flagged

package.jsonView file

Lines 1-13json

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

3 "version": "0.2.20",

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/hum.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 5-30javascript

5// it over localhost. Everything the person sees is there; everything the session records is in

6// the core. This file is what npm put on PATH and it changes only when npm reinstalls it: keep

7// it small, and keep it running whatever the versions directory holds.

8import fs from 'node:fs';

9import { fileURLToPath, pathToFileURL } from 'node:url';

10import path from

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

88877import fs5 from "node:fs"; L88878: import net from "node:net"; L88879: import os5 from "node:os"; ... L88881: import crypto from "node:crypto"; L88882: import { spawn as spawn2, spawnSync as spawnSync3 } from "node:child_process"; L88883: function uvToolDirs() { L88884: const dirs = []; L88885: if (process.env.UV_TOOL_DIR) dirs.push(process.env.UV_TOOL_DIR); L88886: if (win3) {

High

Same File Env Network Execution

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

dist/cli.mjsView on unpkg · L88877

4648import process3 from "node:process"; L4649: import { execFileSync } from "node:child_process"; L4650: import fs from "node:fs"; ... L4705: try { L4706: const statContents = fs.readFileSync("/proc/self/stat", "utf8"); L4707: const closingParenthesisIndex = statContents.lastIndexOf(") "); ... L71088: /* metaparameters */ L71089: "alias audit before loglevel noop require subscribe tag owner ensure group mode name|0 changes context force incl lens load_path onlyif provider returns root show_diff type_check e... L71090: ),

Source & flagged code

9 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

1 Critical6 High4 Medium5 Low

CriticalBrowser Credential Phishingdist/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/cli.mjs

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requirebin/hum.js

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

Low

Affected versions and remediation

This report applies to @metaphi-ai/hum@0.2.20.

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

Review the evidence and your use of @metaphi-ai/hum@0.2.20 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: 2026-10-09 06:54:01.768Z (UTC).

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