registry / Staged payload carrier / negotium / 0.2.23

negotium@0.2.23

Install the Negotium multi-agent runtime and CLI with one package

AI Security Review

scanned 2mo ago · by lpm-firewall-ai

No concrete theft, destructive action, stealth persistence, or foreign AI-agent control-surface mutation was found. The checksum-pinned remote executable installation remains an unresolved staged-payload risk.

Static reason

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

Trigger

npm postinstall

Impact

Adds executable payloads to ~/.negotium for later browser and background-shell features.

Mechanism

verified remote native-binary installation

AI rationale

Evidence

package.jsoninstall-browser-rs.mjsinstall-bash-rs.mjsdist/runtime/cron/scripts.tsdist/runtime/src/agents/auth-check.ts~/.negotium/binaries/browser-rs/v0.1.19/browser-rs~/.negotium/binaries/bash-rs/v0.1.5/bash-rs

Network endpoints2

github.com/maestrojeong/browser-rs-mcp/releases/download/v0.1.19github.com/maestrojeong/bash-rs-mcp/releases/download/v0.1.5

Decision evidence

public snapshot

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

Evidence for warning

package.json runs postinstall.
install-browser-rs.mjs downloads a native executable.
install-bash-rs.mjs downloads a native executable.
Both write executable files under ~/.negotium.

Evidence against

Downloads are pinned to GitHub release URLs and SHA-256 verified.
README describes browser and bash runtime installation.
No source-found credential exfiltration or foreign agent-config mutation.
Runtime agent and shell capabilities are user-invoked features.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 252 file(s), 5.50 MB of source, external domains: 127.0.0.1, api.deepseek.com, github.com

Source & flagged code

9 flagged

package.jsonView file

•scripts.postinstall = node install-browser-rs.mjs && node install-bash-rs.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node install-browser-rs.mjs && node install-bash-rs.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/hosted-agent.jsView file

Lines 1-29javascript

1// @bun

2import {

3 __require,

4 __toESM,

5 canonicalMcpBridgeEnv,

6 revokeCanonicalMcpBridgeTurn

7} from "./chunk-s2gez3wg.js";

9// ../../packages/core/src/agents/claude-provider.ts

10import { spawn as spawn2 } from "child_process";

11import { existsSync as existsSync2, readFileSync as readFileSync3 } from "fs";

High

Child Process

Package source references child process execution.

dist/hosted-agent.jsView on unpkg · L9

12import { query } from "@anthropic-ai/claude-agent-sdk";

14// ../../packages/core/src/agents/rollout/shared.ts

15import { resolve as resolve2 } from "path";

17// ../../packages/core/src/platform/config.ts

18import { execFileSync } from "child_process";

19import { randomBytes } from "crypto";

20import {

21 accessSync,

22 chmodSync,

23 constants,

24 existsSync,

25 mkdirSync,

26 readFileSync,

27 writeFileSync

28} from "fs";

29import { createRequire } from "module";

Lines 172-212javascript

172var BROWSER_RS_BIN = resolveBrowserRsBin(envText("NEGOTIUM_BROWSER_RS_BIN"));

173var BASH_RS_VERSION = "v0.1.5";

174function resolveBashRsBin(envValue) {

175 const

dist/main.jsView file

1940async function bootstrapCodexModelCache(codexHome, cachePath) { L1941: const child = spawn(process.execPath, [codexCliScriptPath(), "app-server", "--stdio"], { L1942: env: { ...process.env, CODEX_HOME: codexHome }, L1943: stdio: ["pipe", "pipe", "pipe"] L1944: }); L1945: await new Promise((resolve4, reject) => { L1946: let settled = false;

High

Same File Env Network Execution

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

dist/main.jsView on unpkg · L1940

1940async function bootstrapCodexModelCache(codexHome, cachePath) { L1941: const child = spawn(process.execPath, [codexCliScriptPath(), "app-server", "--stdio"], { L1942: env: { ...process.env, CODEX_HOME: codexHome }, ... L1944: }); L1945: await new Promise((resolve4, reject) => { L1946: let settled = false; L1947: let stdoutBuffer = ""; L1948: let stderr = ""; ... L1955: try { L1956: child.stdin.end(); L1957: child.kill();

High

Command Output Exfiltration

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

dist/main.jsView on unpkg · L1940

dist/agent-helpers.jsView file

3159Trigger-reachable command-output exfiltration chain: manifest.exports -> dist/agent-helpers.js L3159: // ../../packages/core/src/agents/codex-app-server.ts L3160: import { spawn as spawn3 } from "child_process"; L3161: function createCodexAppServerForker(host) { ... L3163: const child = host.spawnServer(); L3164: return await new Promise((resolve6, reject) => { L3165: let settled = false; L3166: let stdoutBuffer = ""; L3167: let stderr = ""; ... L3174: try { L3175: child.stdin.end(); L3176: child.kill();

High

Trigger Reachable Command Output Exfiltration

A manifest entrypoint or package-local install chain reaches command-output exfiltration behavior.

dist/agent-helpers.jsView on unpkg · L3159

dist/runtime/scripts/faster-whisper-wrapper.pyView file

•path = dist/runtime/scripts/faster-whisper-wrapper.py kind = build_helper sizeBytes = 2704 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

dist/runtime/scripts/faster-whisper-wrapper.pyView on unpkg

dist/browser-runtime.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = negotium@0.1.32 matchedIdentity = npm:bmVnb3RpdW0:0.1.32 similarity = 0.375 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/browser-runtime.jsView on unpkg

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.postinstall = node install-browser-rs.mjs && node install-bash-rs.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node install-browser-rs.mjs && node install-bash-rs.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/hosted-agent.jsView file

9// ../../packages/core/src/agents/claude-provider.ts L10: import { spawn as spawn2 } from "child_process"; L11: import { existsSync as existsSync2, readFileSync as readFileSync3 } from "fs";

High

Child Process

Package source references child process execution.

dist/hosted-agent.jsView on unpkg · L9

Findings

1 Critical6 High6 Medium4 Low

CriticalPrevious Version Dangerous Deltadist/browser-runtime.js

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/hosted-agent.js

HighShell

HighSame File Env Network Executiondist/main.js

HighCommand Output Exfiltrationdist/main.js

HighTrigger Reachable Command Output Exfiltrationdist/agent-helpers.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requiredist/hosted-agent.js

MediumNetwork

MediumEnvironment Vars

MediumShips Build Helperdist/runtime/scripts/faster-whisper-wrapper.py

Medium

Affected versions and remediation

This report applies to negotium@0.2.23.

See all versions of negotium for other recorded verdicts.

Review the evidence and your use of negotium@0.2.23 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: 2026-08-09 22:01:33.562Z (UTC).

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