pennyrouter@0.3.17: Clean npm security report (Allow)

AI Security Review

scanned 11d ago · by lpm-firewall-ai

The manifest exposes a command-line tool without install hooks. Inspected network and agent configuration behavior is consistent with user-invoked setup and gateway integration, so the scanner hints do not establish malicious behavior.

Static reason

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

Trigger

The user runs the PennyRouter command-line setup or launches an integrated harness.

Impact

No concrete harmful effect or unrelated credential recipient was established.

Mechanism

Setup writes PennyRouter-specific harness configuration; the statusline requests data from the configured gateway using its associated key.

AI rationale

The manifest exposes a command-line tool without install hooks. Inspected network and agent configuration behavior is consistent with user-invoked setup and gateway integration, so the scanner hints do not establish malicious behavior.

Decision evidence

public snapshot

AI called this Clean at 91.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

package.json exposes a command-line entry point and has no install lifecycle hook.
Claude statusline setup is reached through launcher code and preserves the existing statusline setting.
The statusline sends a key to the configured gateway for status data; no unrelated recipient is established.
MCP registration adds a PennyRouter-owned entry and preserves existing entries.
The flagged session and thread-session locations concern harness session paths; the CodeGPT install plan avoids editing IDE settings.
Upstream credentials are deliberately submitted to the selected gateway during setup.

Evidence against

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 31 file(s), 347 KB of source, external domains: 127.0.0.1, api.pennyrouter.com, app.example, chatgpt.com, gateway.example, gateway.example.com, gateway.internal.example.com, gw.example, new.example, old.example, opencode.ai, pennyrouter.com, private.example, proxy.example.com, www.perplexity.ai

Source & flagged code

6 flagged

src/launch.test.jsView file

1import assert from "node:assert/strict"; L2: import { spawnSync } from "node:child_process"; L3: import fs from "node:fs"; ... L47: async function main() { L48: if (!(["darwin", "linux"].includes(process.platform))) { L49: console.log("launch.test.js: skipped on unsupported platform"); ... L53: const root = fs.mkdtempSync(path.join(os.tmpdir(), "pr-launch-test-")); L54: const previous = Object.fromEntries(ENV_KEYS.map((key) => [key, process.env[key]])); L55: const home = path.join(root, "home"); ... L61: }, null, 2)}\n`; L62: const nativeCodex = 'model = "native-model"\n\nmodel_provider = "pennyrouter"\n\n[model_providers.pennyrouter]\nname = "PennyRouter"\nbase_url = "http://localhost:8400/v1"\n'; L63: fs.writeFileSync(path.join(home, ".claude", "settings.json"), nativeClaude);

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

src/launch.test.jsView on unpkg · L1

src/harnesses/codegpt.jsView file

1import { spawnSync } from "node:child_process"; L2: ... L52: L53: // The record carries the base URL this install actually wrote, so a private/self-hosted L54: // gateway is named here instead of the hosted default the user never configured. ... L58: console.log(" Open CodeGPT settings and remove or replace the PennyRouter provider:"); L59: console.log(` - Base URL: ${record?.changes?.base_url || "https://api.pennyrouter.com/v1"}`); L60: console.log(" - API Key: pr-..."); ... L66: const commands = L67: process.platform === "darwin" L68: ? [["pbcopy"]] L69: : process.platform === "win32"

High

Sandbox Evasion Gated Capability

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

src/harnesses/codegpt.jsView on unpkg · L1

src/statusline.jsView file

•Runtime or CLI code links a write operation to an explicit external AI-agent control path: tatusline (all lines) |] penny segment (penny / penny (sub) // / penny (byok) / penny off). the wrapped statusline's first line gets the penny suffix; // any further lines (e.g. a context bar) pass through verbatim. // never blocks on the network: reads a per-session cache and refreshes it detached. import { readfilesync, mkdirsync, writefilesync, statsync } from "node:fs"; import { spawn, spawnsync } from "node:child_process"; import { join, basename } from "node:path"; import os from "node:os"; const statedir = join( process.env.xdg_state_home || join(os.homedir(), ".local", "state"), "pennyrouter", ); const cachedir = join(statedir, "statusline-cache"); const titlesessionfile = process.env.pe

High

External Ai Agent Control Surface Mutation

Runtime or CLI source writes behavior-bearing configuration into a user or project AI-agent control surface.

src/statusline.jsView on unpkg

src/launch.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. const claude_desktop_profile_id = "70656e6e-7972-4f75-8465-720000000001"; const claude_desktop_profile_name = "pennyrouter"; const terminal_title_refresh_ms = 1000; const terminal_status_refresh_ms = 15000; export function pennyconfigdir() { if (process.platform === "win32") { return join(process.env.appdata || process.env.localappdata || homedir(), "pennyrouter"); } return join(process.env.xdg_config_home || join(homedir(), ".config"), "pennyrouter"); } export function pennyconfigpath() { return join(pennyconfigdir(), "config.json"); } export function pennydatadir() { if (process.platform === "win32") { return join(process.env.localappdata || process.env.ap

High

Trigger Reachable External Ai Agent Control Surface Mutation

Manifest-trigger-reachable source writes behavior-bearing configuration into a user or project AI-agent control surface.

src/launch.jsView on unpkg

•matchType = previous_version_dangerous_delta matchedPackage = pennyrouter@0.3.16 matchedIdentity = npm:cGVubnlyb3V0ZXI:0.3.16 similarity = 0.903 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.

src/launch.jsView on unpkg

src/mcp-register.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 2

High

Semantic Analysis Limited

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

src/mcp-register.js#virtual:normalized:round1View on unpkg

Source & flagged code

6 flagged · loading source

src/launch.test.jsView file

1import assert from "node:assert/strict"; L2: import { spawnSync } from "node:child_process"; L3: import fs from "node:fs"; ... L47: async function main() { L48: if (!(["darwin", "linux"].includes(process.platform))) { L49: console.log("launch.test.js: skipped on unsupported platform"); ... L53: const root = fs.mkdtempSync(path.join(os.tmpdir(), "pr-launch-test-")); L54: const previous = Object.fromEntries(ENV_KEYS.map((key) => [key, process.env[key]])); L55: const home = path.join(root, "home"); ... L61: }, null, 2)}\n`; L62: const nativeCodex = 'model = "native-model"\n\nmodel_provider = "pennyrouter"\n\n[model_providers.pennyrouter]\nname = "PennyRouter"\nbase_url = "http://localhost:8400/v1"\n'; L63: fs.writeFileSync(path.join(home, ".claude", "settings.json"), nativeClaude);

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

src/launch.test.jsView on unpkg · L1

src/harnesses/codegpt.jsView file

1import { spawnSync } from "node:child_process"; L2: ... L52: L53: // The record carries the base URL this install actually wrote, so a private/self-hosted L54: // gateway is named here instead of the hosted default the user never configured. ... L58: console.log(" Open CodeGPT settings and remove or replace the PennyRouter provider:"); L59: console.log(` - Base URL: ${record?.changes?.base_url || "https://api.pennyrouter.com/v1"}`); L60: console.log(" - API Key: pr-..."); ... L66: const commands = L67: process.platform === "darwin" L68: ? [["pbcopy"]] L69: : process.platform === "win32"

Findings

5 High4 Medium4 Low

HighSandbox Evasion Gated Capabilitysrc/harnesses/codegpt.js

HighExternal Ai Agent Control Surface Mutationsrc/statusline.js

HighTrigger Reachable External Ai Agent Control Surface Mutationsrc/launch.js

HighSemantic Analysis Limitedsrc/mcp-register.js#virtual:normalized:round1

HighPrevious Version Dangerous Deltasrc/launch.js

MediumNetwork

MediumEnvironment Vars

MediumInstall Persistencesrc/launch.test.js

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Behavioral surface

Source & flagged code