registry / AI-agent capability abuse / negotium / 0.10.0

negotium@0.10.0

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

AI Security Review

scanned 2mo ago · by lpm-firewall-ai

The package has risky install-time binary delivery and powerful runtime agent integration, including a Codex hook-trust bypass. Its visible safeguards and absence of confirmed exfiltration or broad foreign control-surface mutation make malicious intent unproven, but the residual risk warrants a warning.

Static reason

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

Trigger

npm postinstall, then use of the Negotium hosted-agent or Codex integration.

Impact

A compromised release host or a flaw in the local agent integration could affect the user's local agent environment; static inspection did not establish credential exfiltration or a foreign configuration mutation.

Mechanism

Native binary installation and privileged local agent-wrapper execution.

AI rationale

Evidence

package.jsoninstall-browser-rs.mjsinstall-bash-rs.mjsdist/hosted-agent.jsdist/mcp-factories.jsdist/agent-helpers.jsdist/runtime-helpers.js~/.negotium/binaries/browser-rs/v0.1.23/browser-rs~/.negotium/binaries/bash-rs/v0.1.7/bash-rs~/.codex/auth.json~/.claude/.credentials.json

Network endpoints2

github.com/maestrojeong/browser-rs-mcp/releases/download/v0.1.23github.com/maestrojeong/bash-rs-mcp/releases/download/v0.1.7

Decision evidence

public snapshot

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

Evidence for warning

The install hook automatically downloads and installs native executables into the user's Negotium state directory.
Runtime code creates a private Codex wrapper that invokes Codex with hook-trust bypass enabled.
The package reads Codex authentication data into a temporary isolated directory during runtime setup.
Agent helper code checks local Codex and Claude credential locations.
Runtime helpers expose dynamic module loading through import.meta.require.

Evidence against

The installers pin release URLs and verify SHA-256 before installing a binary.
The install hook only writes under the package's own .negotium state directory.
The inspected DeepSeek request is a configured cron-summary feature using its official API host; no fixed unofficial credential gateway was found.
The temporary Codex authentication copy is removed in a finally block.
No self-dependency, foreign agent configuration write, or confirmed secret exfiltration was found.

Behavioral surface

Source

ChildProcessCrypto

Source & flagged code

10 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": "^0.3.251",

148 "@anthropic-ai/sdk": "^0.122.0",

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

150 "@openai/codex-sdk": "^0.151.0",

151 "diff": "^9.0.0",

152 "maestro-agent-sdk": "0.4.1",

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

154 "orchgraph": "0.2.1",

155 "pino": "^10.3.1",

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

157 "tsx": "^4.22.4",

158 "zod": "^4.3.6"

159 },

160 "devDependencies": {

161 "@types/node": "^20",

162 "bun-types": "^1.3.11",

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

3944}); L3945: import { spawn as spawn3 } from "child_process"; L3946: function createCodexAppServerForker(host) { ... L3948: const child = host.spawnServer(); L3949: return await new Promise((resolve6, reject) => { L3950: let settled = false; L3951: let stdoutBuffer = ""; L3952: let stderr = ""; ... L3959: try { L3960: child.stdin.end(); L3961: 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 · L3944

dist/agent-helpers.jsView file

3237Trigger-reachable command-output exfiltration chain: manifest.exports -> dist/agent-helpers.js L3237: }); L3238: import { spawn as spawn3 } from "child_process"; L3239: function createCodexAppServerForker(host) { ... L3241: const child = host.spawnServer(); L3242: return await new Promise((resolve6, reject) => { L3243: let settled = false; L3244: let stdoutBuffer = ""; L3245: let stderr = ""; ... L3252: try { L3253: child.stdin.end(); L3254: 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 · L3237

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

dist/query-runtime.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = negotium@0.7.0 matchedIdentity = npm:bmVnb3RpdW0:0.7.0 similarity = 0.950 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/query-runtime.jsView on unpkg

Source & flagged code

10 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 Critical7 High6 Medium4 Low

CriticalPrevious Version Dangerous Deltadist/query-runtime.js

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

Affected versions and remediation

This report applies to negotium@0.10.0.

See all versions of negotium for other recorded verdicts.

Review the evidence and your use of negotium@0.10.0 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: 2026-08-31 10:21:24.228Z (UTC).

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