@metaphi-ai/hum@0.2.22

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

AI Security Review

scanned 14d ago · by lpm-firewall-ai

The postinstall hook automatically provisions Hum’s separately distributed core and may bootstrap uv, which warrants a lifecycle setup warning. The inspected source shows no confirmed malicious payload, credential exfiltration, or broad foreign agent control-surface mutation.

Static reason

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

Trigger

Installing the npm package when its matching core is absent; the CLI can also provision the core on startup.

Impact

Installation can execute remote bootstrap code and add the Hum core to the user’s home directory; no confirmed credential theft or foreign agent configuration change was identified.

Mechanism

The hook calls the installer, which may run shell or PowerShell commands to install uv, then uses uv to install the Hum Python core into a versioned directory.

AI rationale

Evidence

package.jsonscripts/postinstall.jsdist/install.mjsdist/cli.mjs~/.hum/versions/<version>/core

Network endpoints2

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

Decision evidence

public snapshot

AI called this Suspicious at 83.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The package runs a postinstall script.
Postinstall installs the matching Hum core when it is missing.
The installer bootstraps uv from astral.sh when needed and uses it to install the Python core.
The CLI can also install the core when it starts and detects it is missing.

Evidence against

The installer uses a versioned Hum home directory for the core.
The inspected source shows no confirmed credential exfiltration or mutation of a foreign agent control surface.

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

Oversized source lightweight scan

dist/cli.mjs

Source & flagged code

9 flagged

package.jsonView file

Lines 1-13json

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

3 "version": "0.2.22",

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@0.2.22.

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

Review the evidence and your use of @metaphi-ai/hum@0.2.22 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 06:54:27.581Z (UTC).

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