registry / @tiens.nguyen/gu-cli / 1.0.838

@tiens.nguyen/gu-cli@1.0.838

Gu CLI — the gu terminal plus the local worker that runs agent / OCR / PDF / embedding jobs on your Mac (Ollama / MLX / OpenAI-compatible).

AI Security Review

scanned 7d ago · by lpm-firewall-ai

Source inspection found no concrete attack behavior. The install hook is constrained PATH setup, and the reported credential redirect is not supported by the inspected login flow, which uses the configured worker API and browser-approved pairing.

Static reason

One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source

Trigger

npm installation triggers the postinstall PATH setup; login and configuration changes require explicit CLI or interactive use.

Impact

The observed effects support ordinary CLI setup and authentication; no malicious impact was established.

Mechanism

The hook adds the global binary directory to a shell profile when needed. Login obtains a worker key through browser-approved pairing with the configured worker API.

AI rationale

Decision evidence

public snapshot

AI called this Clean at 95.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

The manifest’s postinstall runs the PATH setup module; it does not invoke a payload installer.
The postinstall skips CI and local installs, and its purpose is to make a global CLI installation reachable from the shell.
Login uses the configured worker API, defaults to the package’s service, and saves a worker key only after browser approval; the REPL sends that key to the configured worker API.
Hook and MCP configuration changes are explicit setup actions, with project hooks and servers requiring approval before use.
The other flagged modules implement package setup, configured model proxy routing, and agent stop handling; inspected source showed no concrete attack behavior.

Evidence against

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsUrlStrings

Source & flagged code

14 flagged

package.jsonView file

•scripts.postinstall = node install-path.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

proxy-selftest.mjsView file

Lines 175-215javascript

175 proxyFx.seen.length = 0;

176 const off = { ...proxy, enabled: false };

177 if (shouldProxy(`${MODEL_URL}/chat/completions`, { proxy: off, settings })) {

178 throw new Error("a disabled proxy was still selected for a model call");

179 }

180 // And the call genuinely goes out on its own — which is why it must FAIL to resolve.

181 let wentDirect = false;

182 try {

183 await proxyFetch(`${MODEL_URL}/chat/completions`, {}, { proxy: off, settings });

184 } catch {

185 wentDirect = true;

186 }

187 if (!wentDirect || proxyFx.seen.length > 0) {

188 throw new Error("a disabled proxy still carried the request");

189 }

190 return "off means off";

191 });

192

193 await step("bad credentials are reported as an auth failure", async () => {

194 // So a wrong password reads as "retype it", not as the model being down.

195 const bad = { ...proxy, password: "definitely-wrong" };

Medium

Secret Pattern

Package contains a possible secret pattern.

proxy-selftest.mjsView on unpkg · L195

196 let status = 0;

197 try {

198 status = (await proxyFetch(`${MODEL_URL}/chat/completions`, {}, { proxy: bad, settings })).status;

199 } catch (e) {

200 if (String(e.message).includes("definitely-wrong")) {

201 throw new Error("the password leaked into the error message");

202 }

203 status = 407;

204 }

205 const kind = classifyProxyFailure({ status });

206 if (kind !== "proxy-auth") throw new Error(`a wrong password was classified as "${kind}"`);

207 return "407 is recognised as a credentials problem";

208 });

209

210 await step("the password never appears in output", async () => {

211 // The failure with no error message. Checked against the real dial string, which is the

212 // one place the secret genuinely lives.

213 const dialled = proxyUrl(proxy);

214 if (!dialled.includes(PASS)) throw new Error("the self-test is not exercising a password");

215 const shown = redactSecrets(`connect failed via ${dialled}`);

mongo-native.mjsView file

Lines 1-38javascript

1/**

2 * MONGODB ON A MAC: NATIVE, NOT DOCKER (task #304).

3 *

4 * Client Expert setup used to start MongoDB in Docker first wherever Docker answered. On a Mac that

5 * costs twice: every database call crosses Docker Desktop's VM and port forwarder, and when Docker

6 * Desktop hangs (seen 2026-09-29, after the disk filled) its forwarder keeps 27017 OPEN while

7 * nothing behind it answers — so the API timed out on every request instead of failing fast, gu

8 * said "Worker key lookup failed", and Docker did not recover by itself. The fix that worked was

9 * Homebrew's mongodb-community as a brew service, the data copied across. This module is that fix,

mongo-native.mjs#virtual:normalized:round1View file

93export const HOMEBREW_INSTALL_COMMAND = L94: "/bin/bash -c \"$(curl -fsSL https://raw.githubusercontent.[redacted].sh)\""; L95:

High

Shell

Package source references shell execution.

mongo-native.mjs#virtual:normalized:round1View on unpkg · L93

46export async function mongoAnswers(host = "127.0.0.1", port = 27017, timeoutMs = 3000) { L47: const net = await import("node:net"); L48: return new Promise((resolve) => {

Medium

Dynamic Require

Package source references dynamic require/import behavior.

mongo-native.mjs#virtual:normalized:round1View on unpkg · L46

browser-bridge.mjsView file

1#!/usr/bin/env node L2: // The browser bridge (task #363, GitHub #144): the gu Chrome extension holds a WebSocket to this L3: // process, and the agent's browser tool (a new Python process every turn) sends it commands over ... L25: export function statePath() { L26: return process.env.GU_BROWSER_STATE || join(homedir(), ".gonext", "browser-bridge.json"); L27: } ... L30: export function encodeFrame(text, opcode = 1) { L31: const payload = Buffer.isBuffer(text) ? text : Buffer.from(text); L32: const n = payload.length; ... L114: pending.set(id, { resolve, timer }); L115: ext.socket.write(encodeFrame(JSON.stringify({ ...cmd, id }))); L116: });

Low

Weak Crypto

Package source references weak cryptographic algorithms.

browser-bridge.mjsView on unpkg · L1

gu-cli.mjsView file

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. gu-cli.mjs: import { mkdir, mkdtemp, readFile, rm, stat, unlink, writeFile } from "node:fs/promises"; import { writeFileSync, unlinkSync } from "node:fs"; await writeFile( // an API key we deliberately don't hold, so an unauthenticated probe returns 401 and const { createInterface } = await import("node:readline/promises"); const { readFileSync, writeFileSync, mkdirSync, existsSync } = await import("node:fs"); const rlp = (await import("node:readline")).createInterface({ writeFileSync(profilePath, next, "utf8");

High

Credential Redirect Persistence

Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.

gu-cli.mjsView on unpkg

19import { mkdir, mkdtemp, readFile, rm, stat, unlink, writeFile } from "node:fs/promises"; L20: import { execFile as execFileCallback, spawn } from "node:child_process"; L21: import { createHash, randomUUID } from "node:crypto"; ... L78: // often has no node on PATH. L79: process.env.GU_NODE ||= process.execPath; L80: L81: // Running worker version, read from the package's own package.json (single source of L82: // truth) so the startup banner shows exactly which build a box is running (task #105). ... L93: L94: const ENV_FILE = join(homedir(), ".gonext", "worker.env"); L95: const preloadedWorkerKey = String(process.env.GONEXT_WORKER_KEY ?? "").trim(); ... L152: Examples:

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

gu-cli.mjsView on unpkg · L19

coding-provider-setup.mjsView file

12* a log means the box. An OpenAI-compatible provider is the opposite — the path is part of the L13: * address. https://openrouter.ai/api/v1 is OpenRouter's documented base, and dropping the /api L14: * from it 404s every call. So this keeps the path and mirrors the API's normalizeOpenAiV1Root ... L47: if (a === 169 && b === 254) return "link-local"; // includes 169.254.169.254 (IMDS) L48: if (a === 10) return "private"; L49: if (a === 172 && b >= 16 && b <= 31) return "private";

High

Cloud Metadata Access

Source reaches cloud instance metadata or link-local credential endpoints.

coding-provider-setup.mjsView on unpkg · L12

proxy-dispatcher.mjsView file

51package = @tiens.nguyen/gu-cli; repositoryIdentity = gu; dependency = undici L51: try { L52: ({ ProxyAgent: ProxyAgentCtor } = await import("undici")); L53: } catch (err) {

High

Copied Package Dependency Bridge

Package metadata claims a different repository identity while copied source loads a runtime dependency bridge.

proxy-dispatcher.mjsView on unpkg · L51

gonext_transcribe.pyView file

•path = gonext_transcribe.py kind = build_helper sizeBytes = 4248 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

gonext_transcribe.pyView on unpkg

agent-stop.mjs#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 9

High

Semantic Analysis Limited

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

agent-stop.mjs#virtual:normalized:round1View on unpkg

gu-repl.mjsView file

•matchType = previous_version_dangerous_delta matchedPackage = @tiens.nguyen/gu-cli@1.0.835 matchedIdentity = npm:QHRpZW5zLm5ndXllbi9ndS1jbGk:1.0.835 similarity = 0.942 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

gu-repl.mjsView on unpkg

Source & flagged code

14 flagged · loading source

package.jsonView file

•scripts.postinstall = node install-path.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

proxy-selftest.mjsView file

195patternName = generic_password severity = medium line = 195

Medium

Secret Pattern

Package contains a possible secret pattern.

proxy-selftest.mjsView on unpkg · L195

mongo-native.mjsView file

18*/ L19: import { spawn } from "node:child_process"; L20: import { existsSync } from "node:fs";

High

Child Process

Package source references child process execution.

Findings

10 High6 Medium5 Low

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processmongo-native.mjs

HighShellmongo-native.mjs#virtual:normalized:round1

HighSame File Env Network Executionmongo-native.mjs

HighCredential Redirect Persistencegu-cli.mjs

HighSandbox Evasion Gated Capabilitygu-cli.mjs

HighCloud Metadata Accesscoding-provider-setup.mjs

HighCopied Package Dependency Bridgeproxy-dispatcher.mjs

HighSemantic Analysis Limitedagent-stop.mjs#virtual:normalized:round1

HighPrevious Version Dangerous Deltagu-repl.mjs

MediumSecret Patternproxy-selftest.mjs

MediumDynamic Require

Affected versions and remediation

This report applies to @tiens.nguyen/gu-cli@1.0.838.

See all versions of @tiens.nguyen/gu-cli for other recorded verdicts.

Review the evidence and your use of @tiens.nguyen/gu-cli@1.0.838 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: 2026-10-16 08:12:11.778Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.