registry / AI-agent capability abuse / alvin-bot / 5.132.1

alvin-bot@5.132.1

Self-hosted autonomous AI agent on Telegram, Slack, Discord, WhatsApp, Signal, terminal & web. Claude Agent SDK + multi-provider engine with auto-failover, detached sub-agents, zero-config memory. Local-first, telemetry-free.

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

The package contains deliberate obfuscation and an explicit detection-bypass plus permission-bypass chain in a runtime bridge. Although no installation lifecycle attack was found, the resulting AI-agent capability is unsafe and insufficiently transparent.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review

Trigger

Running the bot or its Claude bridge; launchd persistence requires an explicit CLI command.

Impact

A compromised or prompt-injected bot session could exercise capabilities without Claude's normal approval checks.

Mechanism

AI-agent permission bypass, prompt transformation, and optional login persistence.

AI rationale

Evidence

claude-bridge/src/claude.jsbin/cli.jspackage.json~/Library/LaunchAgents/com.alvinbot.app.plist~/Library/LaunchAgents/com.alvinbot.deadman.plist

Decision evidence

public snapshot

AI called this Suspicious at 91.0% confidence as Dangerous Capability with low false-positive risk.

Evidence for warning

The published runtime is deliberately obfuscated; the manifest exposes a debug build flag to disable obfuscation.
The Claude bridge labels its transformation as a detection bypass and rewrites outbound identifiers before invoking Claude.
It invokes Claude with permission checks explicitly disabled.
The CLI can install a login persistence agent and an independent watcher that restarts the bot.

Evidence against

The manifest has no preinstall, install, or postinstall hook.
The persistence path is exposed through an explicit launchd command, not package installation.
No self-dependency or confirmed secret-exfiltration endpoint was found.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsMinified

Source & flagged code

18 flagged

claude-bridge/src/claude.jsView file

Lines 1-22javascript

1'use strict';

3const { spawn } = require('child_process');

4const crypto = require('crypto');

High

Child Process

Package source references child process execution.

claude-bridge/src/claude.jsView on unpkg · L2

Medium

Dynamic Require

Package source references dynamic require/import behavior.

claude-bridge/src/claude.jsView on unpkg · L2

6const CLAUDE_BIN = process.env.CLAUDE_BIN || 'claude';

Low

Weak Crypto

Package source references weak cryptographic algorithms.

claude-bridge/src/claude.jsView on unpkg · L2

8// --- Stable alias per CLI session ---

9// Each session keeps one alias so resumed requests don't accumulate different

10// names in the Claude context (which would leak un-replaced aliases in output).

11const PREFIXES = ['Chat', 'Dev', 'Run', 'Ask', 'Net', 'App', 'Zen', 'Arc', 'Dot', 'Amp', 'Hex', 'Orb', 'Elm', 'Oak', 'Sky'];

12const SUFFIXES = ['Kit', 'Box', 'Pod', 'Hub', 'Lab', 'Ops', 'Bay', 'Tap', 'Rim', 'Fog', 'Dew', 'Fin', 'Gem', 'Jet', 'Cog'];

13const pick = (arr) => arr[Math.floor(Math.random() * arr.length)];

14const sessionAliasMap = new Map(); // sessionId → { alias, aliasLower, lastUsed }

15const sessionTokenMaps = new Map(); // sessionId → Map<original, replacement>

17function getSessionAlias(sessionId) {

18 if (!sessionId) {

19 const alias = pick(PREFIXES) + pick(SUFFIXES);

20 return { alias, aliasLower: alias.toLowerCase() };

21 }

22 let entry = sessionAliasMap.get(sessionId);

•matchType = normalized_sha256 matchedPackage = alvin-bot@5.100.0 matchedPath = claude-bridge/src/claude.js matchedIdentity = npm:YWx2aW4tYm90:5.100.0 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.

claude-bridge/src/claude.jsView on unpkg

bin/cli.jsView file

Lines 2-42javascript

3/**

4 * Alvin Bot CLI — Setup, manage, and chat with your AI agent.

5 *

6 * Usage:

7 * alvin-bot setup — Interactive setup wizard

8 * alvin-bot tui — Terminal chat UI

9 * alvin-bot doctor — Check configuration

10 * alvin-bot audit — Security health check

11 * alvin-bot update — Pull latest & rebuild

12 * alvin-bot start — Start the bot

dist/services/browser-manager.jsView file

Lines 1-1javascript

1const _0x1cc1b0=_0x55f1;(function(_0x2a875b,_0x2cc2c1){const _0x54ca04=_0x55f1,_0x22f381=_0x55f1,_0x48122b=_0x2a875b();while(!![]){try

dist/middleware/auth.jsView file

1(function(_0x4665c0,_0x502c84){const _0x4dc670=_0x5103,_0x452585=_0x5103,_0x1e9bc5=_0x4665c0();while(!![]){try{const _0x12b4ee=parseInt(_0x4dc670(0x8c))/(0x2505+-0x5*-0x3a9+-0x3751...

High

Obfuscated Payload Loader

Source contains an obfuscated payload loader that reconstructs and executes hidden code.

dist/middleware/auth.jsView on unpkg · L1

install.shView file

•path = install.sh kind = build_helper sizeBytes = 10656 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

install.shView on unpkg

claude-bridge/src/claude.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 18

High

Semantic Analysis Limited

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

claude-bridge/src/claude.js#virtual:normalized:round1View on unpkg

claude-bridge/src/server.jsView file

•matchType = normalized_sha256 matchedPackage = alvin-bot@5.100.0 matchedPath = claude-bridge/src/server.js matchedIdentity = npm:YWx2aW4tYm90:5.100.0 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.

claude-bridge/src/server.jsView on unpkg

plugins/email/index.jsView file

•matchType = normalized_sha256 matchedPackage = alvin-bot@5.100.0 matchedPath = plugins/email/index.js matchedIdentity = npm:YWx2aW4tYm90:5.100.0 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.

plugins/email/index.jsView on unpkg

Source & flagged code

18 flagged · loading source

claude-bridge/src/claude.jsView file

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

High

Child Process

Package source references child process execution.

claude-bridge/src/claude.jsView on unpkg · L2

High

Known Malware Source Similarity

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

claude-bridge/src/claude.jsView on unpkg

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

Medium

Dynamic Require

Package source references dynamic require/import behavior.

claude-bridge/src/claude.jsView on unpkg · L2

Findings

15 High7 Medium8 Low

HighChild Processclaude-bridge/src/claude.js

HighShell

HighEntrypoint Build Divergencebin/cli.js

HighSame File Env Network Executionbin/cli.js

HighCommand Output Exfiltrationdist/services/browser-manager.js

HighSandbox Evasion Gated Capabilitybin/cli.js

HighObfuscated Payload Loaderdist/middleware/auth.js

HighCross File Remote Execution Contextbin/cli.js

HighTrigger Reachable Persistencebin/cli.js

HighRuntime Package Installbin/cli.js

HighObfuscated

HighSemantic Analysis Limitedclaude-bridge/src/claude.js#virtual:normalized:round1

Affected versions and remediation

This report applies to alvin-bot@5.132.1.

See all versions of alvin-bot for other recorded verdicts.

Review the evidence and your use of alvin-bot@5.132.1 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: 2026-09-09 10:15:14.169Z (UTC).

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

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Runtime surface

Behavioral surface

Source & flagged code