registry / AI-agent capability abuse / @luckydraw/cumulus / 1.0.59

@luckydraw/cumulus@1.0.59

RLM-based CLI chat wrapper for Claude with external history context management

AI Security Review

scanned 3d ago · by lpm-firewall-ai

The permission-bypass launch and gateway message paths leave a concrete dangerous capability when external or automated messages reach configured tools. The manifest and inspected setup code do not establish malicious install-time behavior.

Static reason

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

Trigger

A user starts a Claude turn or an enabled gateway path delivers a message.

Impact

A turn may perform local actions without Claude’s usual permission prompts, depending on the configured tools and access.

Mechanism

The gateway builds per-thread MCP configuration and launches the local Claude CLI with bypassPermissions; configured tools and file roots determine the available capabilities.

AI rationale

Evidence

dist/lib/gateway.jsdist/tui/hooks/useClaudeProcess.jsdist/gateway/server.jsdist/gateway/adapters/slack.jsdist/gateway/adapters/discord.jsdist/gateway/adapters/webchat.jsdist/gateway/scheduler.jsdist/gateway/daemon.jsdist/gateway/hooks.js

Decision evidence

public snapshot

AI called this Suspicious at 82.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The manifest’s lifecycle scripts run a build before publishing and Husky during prepare; it has no install hook.
The gateway launches Claude locally with permission prompts bypassed and supplies a per-thread MCP configuration.
Configured gateway inputs, adapters, scheduled turns, and recovery paths pass messages into the agent pipeline.
The flagged runtime receivers perform formatting, configuration serialization, local state handling, or request filtering; they do not establish an unrelated account action.
The flagged agent integration location resolves a local Claude executable; MCP servers and file roots are supplied through gateway configuration.

Evidence against

The package has no preinstall, install, or postinstall script.
The setup path asks before installing a login service; the manifest’s prepare command invokes Husky.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsEvalFilesystemNetworkShell

Source & flagged code

8 flagged

dist/tui/hooks/useClaudeProcess.jsView file

Lines 1-23javascript

1/**

2 * Hook for managing Claude subprocess and streaming.

3 */

4import { spawn } from 'child_process';

5import { useCallback, useRef } from 'react';

High

Child Process

Package source references child process execution.

dist/tui/hooks/useClaudeProcess.jsView on unpkg · L3

6import { ContextBudget } from '../../lib/context-budget.js';

7import { StreamProcessor } from '../../lib/stream-processor.js';

8import { extractTextFromStreamLine } from '../utils/streamParser.js';

9export function useClaudeProcess(options) {

10 const { mcpConfigPath, contentStore, onText, onComplete, onError, onExternalize, onTTFT } = options;

11 const processRef = useRef(null);

12 const responseRef = useRef('');

13 const bufferRef = useRef('');

14 const completedRef = useRef(false);

15 const spawnTimeRef = useRef(0);

16 const ttftFiredRef = useRef(false);

17 const kill = useCallback(() => {

18 const partial = responseRef.current;

19 if (processRef.current) {

20 processRef.current.kill('SIGTERM');

21 processRef.current = null;

22 }

23 return partial;

dist/lib/gateway.jsView file

Lines 2328-2368javascript

2328 // under --permission-mode bypassPermissions it is a guaranteed no-op — so deny-by-default

2329 // has to be expressed as a denylist. Gated on the field being present so an unconstrained

2330 // thread never pays for the inventory probe (a subprocess spawn) at all.

2331 const effectiveDisallowedTools = mergedConfig.allowedTools

2332 ? compileDisallowedTools(mergedConfig.allowedTools, await

dist/gateway/server.jsView file

Lines 1-31javascript

1/**

2 * Gateway HTTP server — exposes the cumulus message pipeline as a REST API

3 * with SSE streaming. Channel adapters and remote clients connect here.

4 *

5 * Endpoints:

6 * POST /api/thread/:name/message — submit message, SSE stream response

7 * POST /api/thread/:name/sync — sync messages from local mode (store only, no Claude)

8 * GET /api/thread/:name/history — recent messages

9 * GET /api/thread/:name/status — thread info + adaptive state

10 * GET /api/threads — list all threads

dist/gateway/setup.jsView file

Lines 1-27javascript

1/**

2 * cumulus-gateway setup wizard and config management.

3 *

4 * Phase 1: `cumulus-gateway setup --project-root <path>` — instant non-interactive setup

5 * Phase 2: `cumulus-gateway setup` — interactive prompts with auto-detection

6 * Phase 4: `cumulus-gateway config set/get/list` — post-install config changes

7 */

8import { execSync } from 'child_process';

9import

dist/lib/version-check.jsView file

Lines 159-199javascript

159export function saveUpdateState(from, to) {

160 const state = {

161 previousVersion: from,

162 updatedAt: new Date().toISOString

dist/gateway/daemon.js#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.

dist/gateway/daemon.js#virtual:normalized:round1View on unpkg

Source & flagged code

8 flagged · loading source

dist/tui/hooks/useClaudeProcess.jsView file

3*/ L4: import { spawn } from 'child_process'; L5: import { useCallback, useRef } from 'react';

High

Child Process

Package source references child process execution.

dist/tui/hooks/useClaudeProcess.jsView on unpkg · L3

dist/lib/gateway.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = @luckydraw/cumulus@1.0.4 matchedIdentity = npm:QGx1Y2t5ZHJhdy9jdW11bHVz:1.0.4 similarity = 0.554 summary = stored previous version shares package body but lacks this dangerous source file

Critical

Previous Version Dangerous Delta

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

dist/lib/gateway.jsView on unpkg

2348// Windows: spawn() can't directly exec .cmd/.bat shims (CVE-2024-27980). L2349: // Routing through cmd.exe is required for the npm-installed `claude.cmd`. L2350: const isWindowsShim = process.platform === 'win32' && /\.(cmd|bat|ps1)$/i.test(resolvedClaudePath);

Findings

1 Critical5 High4 Medium9 Low

CriticalPrevious Version Dangerous Deltadist/lib/gateway.js

HighChild Processdist/tui/hooks/useClaudeProcess.js

HighShelldist/lib/gateway.js

HighTrigger Reachable Persistencedist/gateway/setup.js

HighRuntime Package Installdist/lib/version-check.js

HighSemantic Analysis Limiteddist/gateway/daemon.js#virtual:normalized:round1

MediumNetwork

MediumEnvironment Vars

MediumInstall Persistencedist/gateway/setup.js

MediumStructural Risk Force Deep Review

LowNon Install Lifecycle Scripts

LowScripts Present

LowEval

Low

Affected versions and remediation

This report applies to @luckydraw/cumulus@1.0.59.

See all versions of @luckydraw/cumulus for other recorded verdicts.

Review the evidence and your use of @luckydraw/cumulus@1.0.59 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: 2026-10-20 10:51:41.221Z (UTC).

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