bingocode@1.1.204

BingoCode - AI-powered coding assistant CLI built on Claude

AI Security Review

scanned 12d ago · by lpm-firewall-ai

The automatic postinstall mutation of the user's Claude skills directory is a concrete agent extension lifecycle risk. The source supports a warning for package-owned skill setup, but does not establish a block-eligible attack.

Static reason

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

Trigger

npm install runs the package's postinstall hook.

Impact

The installed skill can influence later assistant behavior. The inspected source does not establish credential theft or a remote control channel.

Mechanism

The hook copies files from the bundled skill directory into the user's Claude skills directory, optionally selected through CLAUDE_CONFIG_DIR.

AI rationale

Evidence

package.jsonscripts/install-skills.cjs.claude/skills/leanchy/SKILL.md~/.claude/skills/leanchy/

Decision evidence

public snapshot

AI called this Suspicious at 96.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The package runs scripts/install-skills.cjs automatically through its postinstall hook.
The installer targets the user's Claude skills directory, using CLAUDE_CONFIG_DIR when set or ~/.claude otherwise.
The installer copies bundled skill files into that directory, and the bundled skill directs the assistant's communication style.
Plugin setup and management locations are part of CLI/runtime behavior; they do not remove the install-time skill copy.

Evidence against

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNativeBindingsNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedUrlStrings

ManifestNo manifest risk signals triggered.

scanned 2,172 file(s), 30.6 MB of source, external domains: 1.1.1.1, 127.0.0.1, anthropic.com, api-staging.anthropic.com, api.anthropic.com, api.example.com, api.telegram.org, app.corridor.dev, apps.apple.com, artifactory.infra.ant.dev, beacon.claude-ai.staging.ant.dev, clau.de, claude-ai.staging.ant.dev, claude-staging.fedstart.com, claude.ai, claude.com, claude.fedstart.com, cli.github.com, code.claude.com, cognitiveservices.azure.com, docs.anthropic.com, docs.claude.com, downloads.claude.ai, evil.com, example.com, fonts.googleapis.com, git-scm.com, github.com, hooks.example.com, http-intake.logs.us5.datadoghq.com, json.schemastore.org, mcp-proxy-staging.anthropic.com, mcp-proxy.anthropic.com, mcp.sentry.dev, mlaas.games.com, open.feishu.cn, platform.claude.com, platform.staging.ant.dev, play.google.com, pypi.tuna.tsinghua.edu.cn, raw.githubusercontent.com, s3-frontend.infra.ant.dev, slack.com, storage.googleapis.com, support.anthropic.com, support.claude.com, tauri.localhost, www.anthropic.com, www.apple.com, www.googleapis.com

Source & flagged code

16 flagged

package.jsonView file

•scripts.postinstall = node scripts/install-skills.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

src/utils/powershell/parser.tsView file

1343patternName = generic_password severity = medium line = 1343

Medium

Secret Pattern

Package contains a possible secret pattern.

src/utils/powershell/parser.tsView on unpkg · L1343

bin/claude-win.cjsView file

2L3: const { spawn } = require('node:child_process'); L4: const path = require('path');

High

Child Process

Package source references child process execution.

bin/claude-win.cjsView on unpkg · L2

•matchType = normalized_sha256 matchedPackage = bingocode@1.1.203 matchedPath = bin/bingocode-win.cjs matchedIdentity = npm:YmluZ29jb2Rl:1.1.203 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.

bin/claude-win.cjsView on unpkg

src/utils/imagePaste.tsView file

2import { randomBytes } from 'crypto' L3: import { execa } from 'execa' L4: import { basename, extname, isAbsolute, join } from 'path'

High

Shell

Package source references shell execution.

src/utils/imagePaste.tsView on unpkg · L2

src/utils/plugins/mcpbHandler.tsView file

4} from '@anthropic-ai/mcpb' L5: import axios from 'axios' L6: import { createHash } from 'crypto' ... L11: import { [redacted] } from '../dxt/helpers.js' L12: import { parseZipModes, unzipFile } from '../dxt/zip.js' L13: import { errorMessage, getErrnoCode, isENOENT, toError } from '../errors.js' ... L92: */ L93: function generateContentHash(data: Uint8Array): string { L94: return createHash('sha256').update(data).digest('hex').substring(0, 16)

Low

Weak Crypto

Package source references weak cryptographic algorithms.

src/utils/plugins/mcpbHandler.tsView on unpkg · L4

src/entrypoints/tray-only.tsView file

10import os from 'os'; L11: import http from 'http'; L12: import { execSync } from 'child_process'; L13: import { fileURLToPath } from 'url'; ... L15: const __filename = fileURLToPath(import.meta.url); L16: const __dirname = path.dirname(__filename); L17: const ROOT_DIR = path.resolve(__dirname, '../../'); L18: L19: const PORT = Number(process.env.BINGO_SERVER_PORT || 3456); L20: const HOST = process.env.BINGO_SERVER_HOST || '127.0.0.1'; ... L30: function isAutostartEnabled(): boolean { L31: if (process.platform !== 'win32') return false;

Medium

Install Persistence

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

src/entrypoints/tray-only.tsView on unpkg · L10

src/utils/ide.tsView file

1354async (isIdeRunningInWindows: boolean, port: number) => { L1355: if (process.env.CLAUDE_CODE_IDE_HOST_OVERRIDE) { L1356: return process.env.CLAUDE_CODE_IDE_HOST_OVERRIDE ... L1364: // Windows, then we must use a different IP address to connect to the extension. L1365: // https://learn.microsoft.com/en-us/windows/wsl/networking L1366: try { L1367: const routeResult = await execa('ip route show | grep -i default', { L1368: shell: true,

High

Same File Env Network Execution

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

src/utils/ide.tsView on unpkg · L1354

scripts/install-skills.cjsView file

2/** L3: * postinstall: copy bundled skills from .claude/skills/ → ~/.claude/skills/ L4: * ... L20: const pkgRoot = path.resolve(__dirname, '..') L21: const srcSkillsDir = path.join(pkgRoot, '.claude', 'skills') L22: const dstSkillsDir = path.join( L23: process.env.CLAUDE_CONFIG_DIR || path.join(home, '.claude'), L24: 'skills', ... L36: try { L37: fs.mkdirSync(dst, { recursive: true }) L38: const src = path.join(srcSkillsDir, skill) L39: for (const file of fs.readdirSync(src)) {

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

scripts/install-skills.cjsView on unpkg · L2

src/utils/vendor/ripgrep/x64-win32/rg.exeView file

•path = src/utils/vendor/ripgrep/x64-win32/rg.exe kind = native_binary sizeBytes = 4266496 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

src/utils/vendor/ripgrep/x64-win32/rg.exeView on unpkg

runtime/win_helper.pyView file

•path = runtime/win_helper.py kind = build_helper sizeBytes = 26350 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

runtime/win_helper.pyView on unpkg

bin/claudeView file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 24

High

Semantic Analysis Limited

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

bin/claudeView on unpkg

•matchType = normalized_sha256 matchedPackage = bingocode@1.1.203 matchedPath = bin/claude matchedIdentity = npm:YmluZ29jb2Rl:1.1.203 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.

bin/claudeView on unpkg

bin/bingo-win.cjsView file

•matchType = normalized_sha256 matchedPackage = bingocode@1.1.203 matchedPath = bin/bingo-win.cjs matchedIdentity = npm:YmluZ29jb2Rl:1.1.203 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.

bin/bingo-win.cjsView on unpkg

bin/bingocode-win.cjsView file

High

Known Malware Source Similarity

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

bin/bingocode-win.cjsView on unpkg

bin/bingoView file

•matchType = normalized_sha256 matchedPackage = bingocode@1.1.203 matchedPath = bin/bingo matchedIdentity = npm:YmluZ29jb2Rl:1.1.203 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.

bin/bingoView on unpkg

Source & flagged code

16 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/install-skills.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

src/utils/powershell/parser.tsView file

1343patternName = generic_password severity = medium line = 1343

Medium

Secret Pattern

Package contains a possible secret pattern.

src/utils/powershell/parser.tsView on unpkg · L1343

bin/claude-win.cjsView file

2L3: const { spawn } = require('node:child_process'); L4: const path = require('path');

High

Child Process

Findings

1 Critical10 High7 Medium5 Low

CriticalAi Agent Control Hijackscripts/install-skills.cjs

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processbin/claude-win.cjs

HighShellsrc/utils/imagePaste.ts

HighSame File Env Network Executionsrc/utils/ide.ts

HighSemantic Analysis Limitedbin/claude

HighKnown Malware Source Similaritybin/bingo-win.cjs

HighKnown Malware Source Similaritybin/bingocode-win.cjs

HighKnown Malware Source Similaritybin/claude-win.cjs

HighKnown Malware Source Similaritybin/claude

HighKnown Malware Source Similaritybin/bingo

MediumSecret Pattern

Affected versions and remediation

This report applies to bingocode@1.1.204.

See all versions of bingocode for other recorded verdicts.

Review the evidence and your use of bingocode@1.1.204 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 14:07:40.668Z (UTC).

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