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@metaphi-ai/hum@0.1.84: Malicious npm security report (Block) | LPM Firewall

registry / @metaphi-ai/hum / 0.1.84

@metaphi-ai/hum@0.1.84

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

AI Security Review

scanned 28d ago · by lpm-firewall-ai

npm installation automatically obtains and executes remote installer code, then installs an external Python core. When the CLI runs, its update mechanism can also start detached remote installers.

Static reason

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

Trigger

Installing the npm package triggers postinstall; running the CLI can trigger an available-version update.

Impact

A remote endpoint and external package registry can supply code that executes with the installing user's privileges.

Mechanism

Remote shell execution and external core installation

Attack narrative

The npm postinstall hook loads the installer automatically. If uv is unavailable, it pipes a script downloaded from astral.sh into a shell or PowerShell, then creates ~/.hum/core and installs hum-cli there. Separately, the CLI can query a vendor release endpoint and launch a detached background installer that pipes another remote script into a shell. These actions create an automatic remote-code supply path outside npm's reviewed package contents.

AI rationale

This package executes remotely supplied scripts during an unconsented npm lifecycle hook and installs an external runtime outside the package. Its CLI also implements detached automatic remote updates, leaving the executable code outside the reviewed artifact.

Evidence

package.jsonscripts/postinstall.jsdist/install.mjsdist/cli.mjs~/.hum/core~/.hum/core-install.json~/.hum/update.log

Source & flagged code

11 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

88say("installing uv (it creates the Python environment for the part of hum that does the work) \u2026"); L89: const r = win ? runImpl("powershell", ["-ExecutionPolicy", "ByPass", "-c", "irm https://astral.sh/uv/install.ps1 | iex"], { stdio: "inherit" }) : runImpl("sh", ["-c", "curl -LsSf h... L90: u = r && r.status === 0 ? uv() : null;

High

Shell

Package source references shell execution.

dist/install.mjsView on unpkg · L88

•matchType = normalized_sha256 matchedPackage = @metaphi-ai/hum@0.1.66 matchedPath = dist/install.mjs matchedIdentity = npm:QG1ldGFwaGktYWkvaHVt:0.1.66 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/install.mjsView on unpkg

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: }; ... L2398: cwdFunction = isBrowser ? () => { L2399: throw new Error("`process.cwd()` only works in Node.js, not the browser."); L2400: } : process2.cwd; ... L2502: } L2503: const imageBuffer = Buffer.from(data); L2504: 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 · L317

83496import fs4 from "node:fs"; L83497: import net from "node:net"; L83498: import os5 from "node:os"; ... L83500: import crypto from "node:crypto"; L83501: import { spawn as spawn2, spawnSync as spawnSync3 } from "node:child_process"; L83502: function uvToolDirs() { L83503: const dirs = []; L83504: if (process.env.UV_TOOL_DIR) dirs.push(process.env.UV_TOOL_DIR); L83505: 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 · L83496

32611if (filePath && origin?.line && fs.existsSync(filePath)) { L32612: const sourceCode = fs.readFileSync(filePath, "utf8"); L32613: excerpt = dist_default3(sourceCode, origin.line); ... L65850: /* metaparameters */ L65851: "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... L65852: ), ... L83192: // src/install.js L83193: import { spawnSync } from "node:child_process"; L83194: import fs2 from "node:fs";

Source & flagged code

11 flagged

package.jsonView file

Lines 1-13json

1{

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

3 "version": "0.1.84",

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": ">=18" },

11 "repository": { "type": "git", "url": "git+https://github.com/metaphi-labs/humboldt.git" }

12}

13

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 1-10javascript

1#!/usr/bin/env node

2// `hum` from npm: the Ink front-end, which starts Hum's core (Python, installed by postinstall

3// via uv) and talks to it over localhost. Everything the person sees is here; everything the

4// session records is in the core.

5import { fileURLToPath, pathToFileURL } from 'node:url';

6import path from 'node:path';

7const

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: }; ... L2398: cwdFunction = isBrowser ? () => { L2399: throw new Error("`process.cwd()` only works in Node.js, not the browser."); L2400: } : process2.cwd; ... L2502: } L2503: const imageBuffer = Buffer.from(data); L2504: 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 · L317

83496import fs4 from "node:fs"; L83497: import net from "node:net"; L83498: import os5 from "node:os"; ... L83500: import crypto from "node:crypto"; L83501: import { spawn as spawn2, spawnSync as spawnSync3 } from "node:child_process"; L83502: function uvToolDirs() { L83503: const dirs = []; L83504: if (process.env.UV_TOOL_DIR) dirs.push(process.env.UV_TOOL_DIR); L83505: 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 · L83496

32611if (filePath && origin?.line && fs.existsSync(filePath)) { L32612: const sourceCode = fs.readFileSync(filePath, "utf8"); L32613: excerpt = dist_default3(sourceCode, origin.line); ... L65850: /* metaparameters */ L65851: "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... L65852: ), ... L83192: // src/install.js L83193: import { spawnSync } from "node:child_process"; L83194: import fs2 from "node:fs";

Lines 68-108javascript

68 return true;

69}

70function installCore(version, { env = process.env, say = (m) => console.log(`hum: ${m}`), runImpl = run, now = Date.now() } = {}) {

71 const home = humHome(env);

72 const dir = coreDir(env);

73 const python = corePython(env);

74 const localBin = path.join(os.homedir(), ".local", "bin");

75 const uvNames = ["uv", path.join(localBin, win ? "uv.exe" : "uv")];

76 const uv = () => uvNames.find((u) => {

77 const r = runImpl(u, ["--version"]);

78 return r && r.status === 0;

79 });

80 const spec = env.HUM_CORE_SPEC || `hum-cli==${version}`;

81 const outcome = (ok, error = null, got = version) => {

82 writeInstallState({ version: got, wanted: version, ok, error, at: now }, env);

83 return { ok, version: got, error };

84 };

85 try {

86 let u = uv();

87 if (!u) {

88 say("installing uv (it creates the Python environment for the part of hum that does the work) \u2026");

89 const r = win ? runImpl("powershell", ["-ExecutionPolicy", "ByPass", "-c", "irm https://astral.sh/uv/install.ps1 | iex"], { stdio: "inherit" }) : runImpl("sh", ["-c", "curl -LsSf https://astral.sh/uv/install.sh | sh"], { stdio: "inherit"

90 u = r && r.status === 0 ? uv() : null;

High

Shell

Package source references shell execution.

dist/install.mjsView on unpkg · L88

91 if (!u) return outcome(false, `could not install uv; install it from https://astral.sh/uv and run: ${npmFix(version)}`);

92 }

93 say(`installing ${env.HUM_CORE_SPEC ? spec : `hum ${version}`} into ${dir} \u2026`);

94 fs.mkdirSync(home, { recursive: true });

95 try {

96 fs.unlinkSync(stampPath(env));

97 } catch {

98 }

99 const trusted = trustedPython(env, runImpl);

100 const makeVenv = (clear) => (runImpl(u, ["venv", "--quiet", "--python", trusted || "3.12", ...clear ? ["--clear"] : [], dir], { stdio: "inherit" }) || {}).status

101 const pipIn = () => (runImpl(u, ["pip", "install", "--quiet", "--python", python, spec], { stdio: "inherit" }) || {}).status === 0;

102 if (!fs.existsSync(python) && !makeVenv(fs.existsSync(dir))) return outcome(false, "uv venv failed");

103 if (!pipIn()) return outcome(false, `uv pip install ${spec} failed`);

104 let got = importedVersion(env, runImpl);

105 if (!got) return outcome(false, "hum did not import after the install");

106 if (got !== version && !env.HUM_CORE_SPEC) return outcome(false, `installed ${got}, wanted ${version}`, got);

107 let blocked = sslBlocked(env, runImpl);

108 if (blocked && trusted) {