registry / Credential exfiltration / @tiens.nguyen/gu-cli / 1.0.774

@tiens.nguyen/gu-cli@1.0.774

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 14d ago · by lpm-firewall-ai

The REPL forwards its worker key to a configurable API base without an evident destination restriction, creating conditional credential exposure. The install hook performs guarded PATH setup, so the supported action is a warning rather than a block.

Static reason

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

Trigger

Run the REPL with a worker key and a configured API base.

Impact

A user-configured unrelated endpoint could receive the worker key.

Mechanism

The REPL adds the key to an API request header and does not restrict the configured destination in the inspected path.

AI rationale

Evidence

gu-repl.mjsdevice-login.mjs~/.gonext/worker.env

Network endpoints1

chat-api-v2.gomarsic.cc

Decision evidence

public snapshot

AI called this Suspicious at 88.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

gu-repl.mjs loads the worker key and API base from environment or saved configuration.
REPL requests send the worker key in a header to the configured API base; no destination allowlist is evident in the inspected path.
The default login API is chat-api-v2.gomarsic.cc, but GONEXT_API_BASE can override it.

Evidence against

The postinstall hook runs a PATH setup script, which has guards for platform, CI, and installation context.
The integration target describes project MCP servers as approval-gated; the inspected excerpt does not show an automatic install-time configuration write.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 63 file(s), 1.74 MB of source, external domains: 127.0.0.1, api.anthropic.com, api.moonshot.ai, api.openai.com, api.voyageai.com, brew.sh, chat-api-v2.gomarsic.cc, deb.nodesource.com, docker.com, gu-api-packages.s3.ap-southeast-1.amazonaws.com, gu.getmarsic.cc, hwohu56e8d.execute-api.ap-southeast-1.amazonaws.com, model.invalid, ollama.com, ollama1.gomarsic.cc, pgp.mongodb.com, registry.npmjs.org, repo.mongodb.org, www.mongodb.com, your-ollama.example.com

Source & flagged code

13 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

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.

mongo-native.mjsView on unpkg · L18

client-expert-api.mjsView file

198child = shell L199: ? spawn(line, { cwd: apiDir, stdio: ["ignore", "pipe", "pipe"], shell: true }) L200: : spawn(cmd, args, { cwd: apiDir, stdio: ["ignore", "pipe", "pipe"], shell: false });

High

Shell

Package source references shell execution.

client-expert-api.mjsView on unpkg · L198

•matchType = previous_version_dangerous_delta matchedPackage = @tiens.nguyen/gu-cli@1.0.692 matchedIdentity = npm:QHRpZW5zLm5ndXllbi9ndS1jbGk:1.0.692 similarity = 0.595 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.

client-expert-api.mjsView on unpkg

rag-selftest.mjs#virtual:normalized:round1View file

34function haystackFile(n) { L35: const lines = [`// Service module ${n}: request handling for the platform"s internal API.`];\n for (let i = 1; i <= 40; i++) {\n lines.push(\n `// helper ${i}: validates t... L36: // embedder is down" when it is simply a different path.\n const raw = String(s.ragEmbedUrl || "").replace(//+$/, "");\n embedUrl = raw && !//v1$/i.test(raw) ? `${raw}/v1` : ...

Medium

Dynamic Require

Package source references dynamic require/import behavior.

rag-selftest.mjs#virtual:normalized:round1View on unpkg · L34

gu-cli.mjsView file

2110" Usage: gu-cli embed --model ~/mlx-models/Qwen3-Embedding-8B-4bit-DWQ [--port 8085] [--host 127.0.0.1]\n" + L2111: " (or set GONEXT_EMBED_MODEL). Then set the RAG embedding server URL to http://<host>:<port> in web Settings." L2112: ); ... L2119: const python = L2120: (process.env.GONEXT_PROBE_PYTHON ?? process.env.GONEXT_MLX_LM_PYTHON ?? "").trim() || L2121: "python3"; ... L2125: ); L2126: const child = spawn( L2127: python,

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

gu-cli.mjsView on unpkg · L2110

18import { mkdir, mkdtemp, readFile, rm, stat, unlink, writeFile } from "node:fs/promises"; L19: import { execFile as execFileCallback, spawn } from "node:child_process"; L20: import { createHash, randomUUID } from "node:crypto"; ... L75: L76: // Running worker version, read from the package's own package.json (single source of L77: // truth) so the startup banner shows exactly which build a box is running (task #105). ... L88: L89: const ENV_FILE = join(homedir(), ".gonext", "worker.env"); L90: const preloadedWorkerKey = String(process.env.GONEXT_WORKER_KEY ?? "").trim(); L91: const envFileLoad = dotenv.config({ path: ENV_FILE }); ... L145: Examples: L146: gu-cli set abc123 --api-base https://hwohu56e8d.execute-api.ap-southeast-1.amazonaws.com

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 · L18

gu-repl.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-repl.mjs: import { readFile, mkdir, writeFile, unlink, rename } from "node:fs/promises"; import { existsSync, statSync, readFileSync, writeFileSync, readdirSync, openSync, readSync, closeSync } from "node:fs"; import { createInterface } from "node:readline"; // A SELF-CONTAINED prompt: this runs before the REPL's readline (and its ask()) is // ONE readline for the whole first run: the mode question and the key prompt share it, // the REPL's own readline exists, so it owns the terminal here). const rl0 = (await import("node:readline")).createInterface({ // Exit AFTER the readline is closed, so the terminal is left in a usable state.

High

Credential Redirect Persistence

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

gu-repl.mjsView on unpkg

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

41package = @tiens.nguyen/gu-cli; repositoryIdentity = gu; dependency = undici L41: try { L42: ({ ProxyAgent: ProxyAgentCtor } = await import("undici")); L43: } 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 · L41

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 = 6

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

Source & flagged code

13 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 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processmongo-native.mjs

HighShellclient-expert-api.mjs

HighSame File Env Network Executiongu-cli.mjs

HighCredential Redirect Persistencegu-repl.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 Deltaclient-expert-api.mjs

MediumSecret Patternproxy-selftest.mjs

MediumDynamic Requirerag-selftest.mjs#virtual:normalized:round1

Affected versions and remediation

This report applies to @tiens.nguyen/gu-cli@1.0.774.

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

Review the evidence and your use of @tiens.nguyen/gu-cli@1.0.774 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 05:23:44.577Z (UTC).

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