registry / Staged payload carrier / negotium / 0.14.3

negotium@0.14.3

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

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

The code shows a real automatic native-payload installation path and high-capability agent integration, so it should not be marked clean. Static inspection found no concrete credential exfiltration, destructive action, self-dependency chain, or broad AI-agent control-surface mutation sufficient for a block.

Static reason

One or more suspicious static signals were detected.

Trigger

npm installation runs postinstall; later CLI and agent actions activate runtime features.

Impact

A consumer executes externally hosted native payloads during installation; the inspected JavaScript does not establish secret theft or remote command execution by those payloads.

Mechanism

Automatic native-binary download plus agent-runtime command and hook integration.

AI rationale

Evidence

package.jsoninstall-browser-rs.mjsinstall-bash-rs.mjs~/.negotium/binaries/browser-rs/v0.4.0/browser-rs~/.negotium/binaries/bash-rs/v0.1.7/bash-rs

Network endpoints3

github.com/maestrojeong/browser-rs-mcp/releases/download/v0.4.0github.com/maestrojeong/bash-rs-mcp/releases/download/v0.1.7127.0.0.1

Decision evidence

public snapshot

AI called this Suspicious at 88.0% confidence as Dangerous Capability with low false-positive risk.

Evidence for warning

The install lifecycle automatically runs two downloaders.
The browser downloader fetches a native executable, verifies a fixed hash, and marks it executable under the user's Negotium state directory.
Runtime code can create a temporary Codex wrapper that invokes Codex with hook trust bypassed.
The bundled MCP factory exposes local MCP endpoints; the large agent runtime has substantial command and file-access capability.
The CLI starts the node only after a user invokes its serve command.

Evidence against

No self-dependency is declared.
No source evidence shows install-time credential harvesting, external secret exfiltration, or mutation of Codex or Claude configuration.
The observed MCP URLs are loopback endpoints, not an unofficial credential gateway.
The downloaded binaries have release-specific SHA-256 checks before installation.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork

Source & flagged code

9 flagged

package.jsonView file

Lines 123-163json

123 ],

124 "engines": {

125 "bun": ">=1.2.15"

126 },

127 "repository": {

128 "type": "git",

129 "url": "git+https://github.com/maestrojeong/negotium.git",

130 "directory": "apps/negotium"

131 },

132 "homepage": "https://github.com/maestrojeong/negotium#readme",

133 "bugs": {

134 "url": "https://github.com/maestrojeong/negotium/issues"

135 },

136 "publishConfig": {

137 "access": "public"

138 },

139 "scripts": {

140 "build": "bun ../../scripts/build-negotium-package.ts",

141 "check": "bunx tsc --noEmit",

142 "lint": "biome check",

143 "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 · L143

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L143

144 "prepack": "bun run build"

145 },

146 "dependencies": {

147 "@anthropic-ai/claude-agent-sdk": "^0.3.261",

148 "@anthropic-ai/sdk": "^0.124.0",

149 "@modelcontextprotocol/sdk": "^1.30.0",

150 "@openai/codex-sdk": "^0.153.4",

151 "diff": "^9.0.0",

152 "maestro-agent-sdk": "0.5.1",

153 "node-telegram-bot-api": "^1.1.2",

154 "orchgraph": "0.2.4",

155 "pino": "^10.3.1",

156 "pino-pretty": "^13.1.3",

157 "tsx": "^4.23.13",

158 "zod": "4.4.3"

159 },

160 "devDependencies": {

161 "@types/node": "^26.4.1",

162 "bun-types": "^1.4.2",

163 "typescript": "^5"

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

dist/mcp-factories.jsView file

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/mcp-factories.js: writeFileSync writeFileSync(secretFile, `${envValue} writeFileSync(secretFile, `${secret} return process.env.NEGOTIUM_CODEX_AUTH_FILE || join(process.env.CODEX_HOME || join(homedir(), ".codex"), "auth.json"); writeFileSync as writeFileSync3 writeFileSync3(fd, payload); import { existsSync as existsSync4, readFileSync as readFileSync5, writeFileSync as writeFileSync4 } from "fs"; const projectsDir = join3(homedir2(), ".claude", "projects", encodeClaudeCwd(opts.cwd));

High

Credential Redirect Persistence

Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.

dist/mcp-factories.jsView on unpkg

dist/main.jsView file

4072}); L4073: import { spawn as spawn3 } from "child_process"; L4074: function createCodexAppServerForker(host) { ... L4076: const child = host.spawnServer(); L4077: return await new Promise((resolve6, reject) => { L4078: let settled = false; L4079: let stdoutBuffer = ""; L4080: let stderr = ""; ... L4087: try { L4088: child.stdin.end(); L4089: 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 · L4072

dist/agent-helpers.jsView file

3308Trigger-reachable command-output exfiltration chain: manifest.exports -> dist/agent-helpers.js L3308: }); L3309: import { spawn as spawn3 } from "child_process"; L3310: function createCodexAppServerForker(host) { ... L3312: const child = host.spawnServer(); L3313: return await new Promise((resolve6, reject) => { L3314: let settled = false; L3315: let stdoutBuffer = ""; L3316: let stderr = ""; ... L3323: try { L3324: child.stdin.end(); L3325: 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 · L3308

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/runtime-helpers.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 3

High

Semantic Analysis Limited

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

dist/runtime-helpers.js#virtual:normalized:round1View 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

7 High6 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/hosted-agent.js

HighShell

HighCredential Redirect Persistencedist/mcp-factories.js

HighCommand Output Exfiltrationdist/main.js

HighTrigger Reachable Command Output Exfiltrationdist/agent-helpers.js

HighSemantic Analysis Limiteddist/runtime-helpers.js#virtual:normalized:round1

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@0.14.3.

See all versions of negotium for other recorded verdicts.

Review the evidence and your use of negotium@0.14.3 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 22:52:46.475Z (UTC).

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