registry / Remote code execution / @metaphi-ai/hum / 0.2.59

@metaphi-ai/hum@0.2.59

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

AI Security Review

scanned 12d ago · by lpm-firewall-ai

The postinstall has a concrete remote installer execution path, creating a meaningful installation-time risk. Source ties it to setting up Hum’s own core, so the evidence supports a warning rather than a malicious classification.

Static reason

One or more suspicious static signals were detected.

Trigger

Installing the package with lifecycle scripts enabled, when the matching Python core or uv is missing.

Impact

Downloaded installer code can execute with the installing user’s privileges. The inspected source does not establish a malicious payload or unrelated system mutation.

Mechanism

The postinstall calls installCore; that function may pipe the astral.sh installer into a shell, then use uv to install the Python core.

AI rationale

Evidence

~/.hum

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 manifest runs a postinstall script, which installs the Python core when the matching version is absent.
The installer can execute a shell command that downloads and runs the uv installer from astral.sh.

Evidence against

The package describes itself as a terminal coding agent, and the install path sets up that agent’s Python core.
The installer pins the core to this package version by default and uses npm with scripts disabled to fetch its own package.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemShell

Supply chain

HighEntropyStringsUrlStrings

Manifest

NoLicense

scanned 3 file(s), 274 KB of source, external domains: api.nuget.org, astral.sh, github.com, hum.metaphi.ai, react.dev

Oversized source lightweight scan

Source & flagged code

9 flagged

package.jsonView file

Lines 1-13json

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

3 "version": "0.2.59",

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";

dist/install.mjs#virtual:normalized:round1View file

95fs.mkdirSync(path.dirname(dir), { recursive: true }); L96: const r = runImpl("powershell", ["-NoProfile", "-ExecutionPolicy", "Bypass", "-Command", script]); L97: try {

High

Shell

Package source references shell execution.

dist/install.mjs#virtual:normalized:round1View on unpkg · L95

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

dist/install.mjs#virtual:normalized:round1View on unpkg

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

•path = dist/cli.mjs kind = oversized_source_file sizeBytes = 4214104 magicHex = [redacted]

Medium

Oversized Source File

Package contains source files above the normal full-analysis size ceiling.

dist/cli.mjsView on unpkg

•path = dist/cli.mjs kind = oversized_cli_entrypoint sizeBytes = 4214104 magicHex = [redacted]

Medium

Oversized Cli Entrypoint

Package contains an oversized executable-looking CLI entrypoint.

dist/cli.mjsView on unpkg

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

5 High6 Medium5 Low

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/install.mjs

HighShelldist/install.mjs#virtual:normalized:round1

HighCross File Remote Execution Contextdist/install.mjs

HighSemantic Analysis Limiteddist/install.mjs#virtual:normalized:round1

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requirebin/hum.js

MediumEnvironment Vars

MediumOversized Source Filedist/cli.mjs

MediumOversized Cli Entrypointdist/cli.mjs

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

Affected versions and remediation

This report applies to @metaphi-ai/hum@0.2.59.

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

Review the evidence and your use of @metaphi-ai/hum@0.2.59 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: 2026-10-11 01:28:59.395Z (UTC).

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