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@codexed/codex@0.149.0-codexed.1: AI-agent control-surface risk | LPM Firewall

registry / @codexed/codex / 0.149.0-codexed.1

@codexed/codex@0.149.0-codexed.1

<p align="center"><strong>Codex CLI</strong> is a coding agent from OpenAI that runs locally on your computer. <p align="center"> <img src="https://github.com/openai/codex/blob/main/.github/codex-cli-splash.png" alt="Codex CLI splash" width="80%" /> </p

AI Security Review

scanned 2h ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. On global npm installation, the lifecycle hook overwrites the globally resolved codex command. This diverts a pre-existing Codex AI-agent CLI launcher to this package without user invocation.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review

Trigger

npm global installation

Impact

Hijacks a foreign AI-agent command path so later codex invocations execute this package’s selected binary.

Mechanism

postinstall replacement of the global codex launcher

Policy narrative

Installing this package globally invokes postinstall. The hook resolves the npm prefix, deletes its existing codex launcher, and atomically replaces it with a symlink to the package launcher. The README identifies @openai/codex as the legitimate npm package, but this differently scoped package claims that same global command. Subsequent user codex executions are redirected to its platform binary.

Rationale

The concrete, unconsented global postinstall overwrite of the codex AI-agent command is sufficient for blocking. No network exfiltration is needed for this control-surface hijack.

Evidence

package.jsonscripts/postinstall.mjsbin/codex.jsREADME.md$PREFIX/bin/codex

Decision evidence

public snapshot

Source & flagged code

8 flagged · loading source

package.jsonView file

•dependencies registry_only=@codexed/codex-linux-arm64,@codexed/codex-linux-x64,@codexed/codex-win32-x64

Critical

Manifest Confusion

Tarball package.json differs from the npm registry version manifest for scripts or dependency sets.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

scripts/postinstall.mjsView file

2L3: import { chmodSync, mkdirSync, renameSync, rmSync, symlinkSync, writeFileSync } from "node:fs"; L4: import os from "node:os"; ... L26: const launcherPath = path.join(binDir, "codex"); L27: const tmpPath = `${launcherPath}.codexed-tmp`; L28: L29: mkdirSync(binDir, { recursive: true }); L30: chmodSync(codexJs, 0o755); ... L42: L43: mkdirSync(launcherDir, { recursive: true }); L44: L45: writeFileSync(

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

scripts/postinstall.mjsView on unpkg · L2

57if (!isGlobalInstall()) { process.exit(0); } const prefix = resolvePrefix(); if (os.platform() === "win32") { replaceWindowsLauncher(prefix); } else { replacePosixLauncher(prefix); }

High

Suspicious Lifecycle Evidence

The postinstall runs only for global installs, then mutates the global launcher.

scripts/postinstall.mjsView on unpkg · L57

29mkdirSync(binDir, { recursive: true }); chmodSync(codexJs, 0o755); rmSync(tmpPath, { force: true }); symlinkSync(codexJs, tmpPath); rmSync(launcherPath, { force: true, recursive: true }); renameSync(tmpPath, launcherPath);

High

Ai Review Evidence

It deletes an existing $PREFIX/bin/codex launcher and replaces it with a symlink to this package.

scripts/postinstall.mjsView on unpkg · L29

bin/codex.jsView file

•matchType = normalized_sha256 matchedPackage = @codexed/codex@0.147.0-codexed.4 matchedPath = bin/codex.js matchedIdentity = npm:QGNvZGV4ZWQvY29kZXg:0.147.0-codexed.4 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/codex.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 8b9951f2d34b50c6 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @codexed/codex@0.147.0-codexed.4 matchedPath = bin/codex.js matchedIdentity = npm:QGNvZGV4ZWQvY29kZXg:0.147.0-codexed.4 similarity = 1.000 shingleOverlap = 2 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

bin/codex.jsView on unpkg

Source & flagged code

8 flagged

package.jsonView file

Lines 3-32json

3 "version": "0.149.0-codexed.1",

4 "license": "Apache-2.0",

5 "bin": {

6 "codex": "bin/codex.js"

7 },

8 "type": "module",

9 "engines": {

10 "node": ">=16"

11 },

12 "files": [

13 "bin",

14 "scripts",

15 "README.md"

16 ],

17 "repository": {

18 "type": "git",

19 "url": "git+https://github.com/openai/codex.git",

20 "directory": "codex-cli"

21 },

22 "packageManager": "pnpm@10.33.0+sha512.10568bb4a6afb58c9eb3630da90cc9516417abebd3fabbe6739f0ae795728da1491e9db5a544c76ad8eb7570f5c4bb3d6c637b2cb41bfdcdb47fa823c8649319",

23 "scripts": {

Critical

Manifest Confusion

Tarball package.json differs from the npm registry version manifest for scripts or dependency sets.

package.jsonView on unpkg · L23

24 "postinstall": "node scripts/postinstall.mjs"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L24

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L24

25 },

26 "optionalDependencies": {

27 "@codexed/codex-linux-x64": "0.149.0-codexed.1",

28 "@codexed/codex-linux-arm64": "0.149.0-codexed.1",

29 "@codexed/codex-win32-x64": "0.149.0-codexed.1"

30 }

31}

32

scripts/postinstall.mjsView file

Lines 1-68javascript

1#!/usr/bin/env node

2

3import { chmodSync, mkdirSync, renameSync, rmSync, symlinkSync, writeFileSync } from "node:fs";

4import os from "node:os";

5import path from "node:path";

6import

bin/codex.jsView file

•matchType = normalized_sha256 matchedPackage = @codexed/codex@0.147.0-codexed.4 matchedPath = bin/codex.js matchedIdentity = npm:QGNvZGV4ZWQvY29kZXg:0.147.0-codexed.4 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/codex.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 8b9951f2d34b50c6 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @codexed/codex@0.147.0-codexed.4 matchedPath = bin/codex.js matchedIdentity = npm:QGNvZGV4ZWQvY29kZXg:0.147.0-codexed.4 similarity = 1.000 shingleOverlap = 2 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

bin/codex.jsView on unpkg