@metaphi-ai/hum@0.2.23

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

AI Security Review

scanned 14d ago · by lpm-firewall-ai

The postinstall and subprocess behavior serve the package’s own versioned core setup, and the CLI delegates work to that core when launched. Although the bootstrap executes an upstream installer, inspected source did not show a concrete attack chain or credential exfiltration.

Static reason

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

Trigger

npm installation runs the postinstall script; launching `hum` starts the CLI session.

Impact

The inspected behavior sets up and runs the package’s own product; no concrete malicious impact was established.

Mechanism

The installer invokes the Astral uv bootstrap when uv is absent, then installs Hum’s versioned Python core. The CLI delegates session work to that core.

AI rationale

Evidence

~/.hum/versions/<version>/core~/.hum/versions/<version>/pkg

Network endpoints2

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

Decision evidence

public snapshot

AI called this Clean at 88.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

package.json links the CLI to a postinstall script and the `hum` launcher.
dist/install.mjs uses the upstream Astral installer to bootstrap uv, then installs Hum’s Python core into a version-specific directory.
dist/cli.mjs starts the core when a session is invoked; the inspected source did not establish credential harvesting or an unrelated exfiltration path.

Evidence against

The postinstall runs a shell command that pipes the Astral-hosted uv installer into the shell; this is automatic bootstrap behavior but is consistent with setting up Hum’s core.

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

Source & flagged code

9 flagged

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

117say("installing uv (it creates the Python environment for the part of hum that does the work) \u2026"); L118: const r = win ? runImpl("powershell", ["-ExecutionPolicy", "ByPass", "-c", "irm https://astral.sh/uv/install.ps1 | iex"], { stdio: "inherit" }) : runImpl("sh", ["-c", "curl -LsSf h... L119: u = r && r.status === 0 ? uv() : null;

High

Shell

Package source references shell execution.

dist/install.mjsView on unpkg · L117

bin/hum.jsView file

25const own = JSON.parse(fs.readFileSync(path.join(here, '..', 'package.json'), 'utf8')).version; L26: const { chosenEntry } = await import(asUrl(path.join(here, '..', 'dist', 'install.mjs'))); L27: entry = chosenEntry(own) || entry;

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/hum.jsView on unpkg · L25

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@0.2.23.

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

Review the evidence and your use of @metaphi-ai/hum@0.2.23 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 06:55:10.389Z (UTC).

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