registry / negotium / 0.5.16

negotium@0.5.16

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

AI Security Review

scanned 2mo ago · by lpm-firewall-ai

The install-time binary bootstrap is transparent, package-aligned, and integrity-pinned. Direct inspection did not substantiate the scanner's claims of credential redirection, foreign-package overwrite, or command-output exfiltration.

Static reason

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

Trigger

npm postinstall

Impact

Installs browser-rs and bash-rs helpers for later explicit runtime use.

Mechanism

verified first-party native helper bootstrap

AI rationale

Evidence

package.jsoninstall-browser-rs.mjsinstall-bash-rs.mjsdist/mcp-factories.js.negotium/binaries/browser-rs/v0.1.23/browser-rs.negotium/binaries/bash-rs/v0.1.7/bash-rs

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 Clean at 88.0% confidence as Benign with medium false-positive risk.

Evidence for AI clean decision

postinstall runs two native-tool installer scripts.
Installers download executable release assets during install.

Evidence against

Each downloaded asset is checked against a hardcoded SHA-256 before installation.
Writes are confined to Negotium's own .negotium binary directory; no foreign agent configuration is changed.
The reviewed peer bridge accepts only loopback URLs.
No source evidence of credential exfiltration, remote payload execution, or destructive behavior.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 259 file(s), 5.80 MB of source, external domains: 127.0.0.1, api.deepseek.com, github.com, www.w3.org

Source & flagged code

11 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

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

196var TSX_BIN = resolveDependencyBin("tsx"); L197: var TSX_LOADER = createRequire(import.meta.url).resolve("tsx"); L198: var TSCONFIG_PATH = resolve(PROJECT_ROOT, "tsconfig.json");

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/hosted-agent.jsView on unpkg · L196

dist/mcp-factories.jsView file

1099async function bootstrapCodexModelCache(codexHome, cachePath) { L1100: const child = spawn(process.execPath, [codexCliScriptPath(), "app-server", "--stdio"], { L1101: env: { ...process.env, CODEX_HOME: codexHome }, L1102: stdio: ["pipe", "pipe", "pipe"] L1103: }); L1104: await new Promise((resolve4, reject) => { L1105: 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/mcp-factories.jsView on unpkg · L1099

•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

•Manifest-reachable source resolves another installed package, overwrites its runtime code, and injects package-defined remote behavior. dist/mcp-factories.js: writeFileSync const candidate = resolve(dir, "node_modules", ".bin", name); writeFileSync(secretFile, `${envValue} writeFileSync(secretFile, `${secret} writeFileSync as writeFileSync3 writeFileSync3(fd, payload); import { existsSync as existsSync4, readFileSync as readFileSync5, writeFileSync as writeFileSync4 } from "fs"; copyFileSync,

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/storage.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = negotium@0.5.14 matchedIdentity = npm:bmVnb3RpdW0:0.5.14 similarity = 0.958 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/storage.jsView on unpkg

Source & flagged code

11 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 Critical8 High6 Medium4 Low

CriticalPrevious Version Dangerous Deltadist/storage.js

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/hosted-agent.js

HighShell

HighSame File Env Network Executiondist/mcp-factories.js

HighCredential Redirect Persistencedist/mcp-factories.js

HighEntrypoint Foreign Package Code Overwritedist/mcp-factories.js

HighCommand Output Exfiltrationdist/mcp-factories.js

HighTrigger Reachable Command Output Exfiltrationdist/mcp-factories.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requiredist/hosted-agent.js

Medium

Affected versions and remediation

This report applies to negotium@0.5.16.

See all versions of negotium for other recorded verdicts.

Review the evidence and your use of negotium@0.5.16 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: 2026-08-23 06:59:02.184Z (UTC).

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