registry / Install hook abuse / @metaphi-ai/hum / 0.1.34

@metaphi-ai/hum@0.1.34

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

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

The package has a real automatic remote-code installation path, but the inspected source does not establish credential theft, broad agent-control mutation, or an npm self-dependency chain. It should be warned on because install-time execution depends on opaque external code.

Static reason

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

Trigger

npm postinstall during package installation

Impact

Remote content can execute with the installing user's permissions and write the Hum engine under the user's home directory.

Mechanism

remote shell bootstrap followed by external Python package installation

AI rationale

Evidence

scripts/postinstall.jsdist/install.mjs~/.hum/engine~/.hum/engine-install.json

Network endpoints2

astral.sh/uv/install.shastral.sh/uv/install.ps1

Decision evidence

public snapshot

AI called this Suspicious at 91.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The postinstall hook automatically imports and runs the engine installer.
The installer runs a remote shell script from astral.sh when uv is absent.
The installer then installs an external Python package into the user's home directory.

Evidence against

No npm self-dependency is declared.
The inspected JavaScript does not show browser credential harvesting or credential exfiltration.
The CLI's local engine connection is restricted to 127.0.0.1.

Behavioral surface

Source

ChildProcessDynamicRequireEnvironmentVarsFilesystemShell

Supply chain

HighEntropyStringsUrlStrings

Manifest

NoLicense

scanned 3 file(s), 263 KB of source, external domains: astral.sh, github.com, reactjs.org

Oversized source lightweight scan

dist/cli.mjs

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

74say("installing uv (it creates the Python environment for the part of hum that does the work) \u2026"); L75: const r = win ? runImpl("powershell", ["-ExecutionPolicy", "ByPass", "-c", "irm https://astral.sh/uv/install.ps1 | iex"], { stdio: "inherit" }) : runImpl("sh", ["-c", "curl -LsSf h... L76: u = r && r.status === 0 ? uv() : null;

High

Shell

Package source references shell execution.

dist/install.mjsView on unpkg · L74

bin/hum.jsView file

8// a URL, not a path: on Windows `C:\…` is not something the ESM loader will import L9: await import(pathToFileURL(path.join(here, '..', 'dist', 'cli.mjs')).href);

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/hum.jsView on unpkg · L8

dist/cli.mjsView file

317"use strict"; L318: if (process.env.NODE_ENV !== "production") { L319: (function() { ... L545: isMounted: ["isMounted", "Instead, make sure to clean up subscriptions and pending requests in componentWillUnmount to prevent memory leaks."], L546: replaceState: ["replaceState", "Refactor your code to use setState instead (see https://github.com/facebook/react/issues/3236)."] L547: }; ... L2209: ]; L2210: if (process.platform !== "win32") { L2211: module.exports.push( ... L2357: } L2358: process13.exitCode = code || /* istanbul ignore next */ L2359: 0;

Critical

Browser Credential Phishing

Source appears to collect browser login credentials for exfiltration.

dist/cli.mjsView on unpkg · L317

75739"use strict"; L75740: if (process.env.NODE_ENV === "production") { L75741: module.exports = require_react_jsx_runtime_production_min(); ... L75749: import fs5 from "node:fs"; L75750: import net from "node:net"; L75751: import os6 from "node:os"; ... L75753: import crypto from "node:crypto"; L75754: import { spawn as spawn2, spawnSync as spawnSync3 } from "node:child_process"; L75755: function uvToolDirs() {

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 · L75739

57423/* metaparameters */ L57424: "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... L57425: ), ... L74578: // src/install.js L74579: import { spawnSync } from "node:child_process"; L74580: import fs2 from "node:fs"; ... L74588: try { L74589: return fs2.readFileSync(stampPath(env3), "utf8").trim() || null; L74590: } catch {

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@0.1.34.

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

Review the evidence and your use of @metaphi-ai/hum@0.1.34 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: 2026-09-14 10:17:38.485Z (UTC).

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