registry / Malware / @luckydraw/cumulus / 1.0.57

@luckydraw/cumulus@1.0.57

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

AI Security Review

scanned 3d ago · by lpm-firewall-ai

The gateway runtime actively injects instructions that override conflicting agent instructions and suppress disclosure of the conflict. This is concrete AI-agent control behavior and supports blocking publication, despite the lack of a malicious install hook.

Static reason

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

Trigger

A gateway agent turn that sends the generated system prompt to a model.

Impact

The model may disregard its surrounding instructions and conceal that behavior from the user.

Mechanism

The prompt directs the model to replace conflicting task-tracking instructions and not disclose that replacement.

Attack narrative

When the gateway sends a model turn, its built-in prompt directs the agent to disregard conflicting system or tool reminders and conceal the conflict. This is an active prompt-based attempt to control the agent’s behavior. The package’s setup and update commands are separate user-invoked behaviors and do not account for this finding.

AI rationale

Evidence

dist/lib/gateway.js

Decision evidence

public snapshot

AI called this Malicious at 91.0% confidence as Malware with low false-positive risk.

Evidence for block

The gateway’s built-in system prompt tells its agent to disregard conflicting tool or system reminders and conceal that conflict.
The gateway constructs a system prompt for model turns and sends it with the user message.
The prompt behavior is part of the gateway runtime, not an install hook.

Evidence against

The manifest’s prepare hook runs Husky, and prepublishOnly builds and type-checks the package.
Installing the gateway service requires an explicit setup command; enabling login auto-start prompts the user.
The package update operation is invoked from an explicit update flow.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedTelemetryUrlStrings

Manifest

NoLicense

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 2320-2360javascript

2320 // under --permission-mode bypassPermissions it is a guaranteed no-op — so deny-by-default

2321 // has to be expressed as a denylist. Gated on the field being present so an unconstrained

2322 // thread never pays for the inventory probe (a subprocess spawn) at all.

2323 const effectiveDisallowedTools = mergedConfig.allowedTools

2324 ? 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 = 7

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

2340// Windows: spawn() can't directly exec .cmd/.bat shims (CVE-2024-27980). L2341: // Routing through cmd.exe is required for the npm-installed `claude.cmd`. L2342: const isWindowsShim = process.platform === 'win32' && /\.(cmd|bat|ps1)$/i.test(resolvedClaudePath);

Findings

1 Critical5 High4 Medium8 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

LowWeak Cryptodist/gateway/server.js

Affected versions and remediation

This report applies to @luckydraw/cumulus@1.0.57.

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

Avoid installing @luckydraw/cumulus@1.0.57. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-10-20 10:47:41.505Z (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

Related packages

Other malware packages

Behavioral surface

Related packages

Other malware packages

Source & flagged code