registry / AI-agent control-surface risk / @vaibot/codex-circuitbreaker-plugin

@vaibot/codex-circuitbreaker-plugin

VAIBot AI agent governance for Codex CLI — intercepts tool calls, classifies risk, enforces policy, and creates tamper-evident audit receipts with on-chain provenance anchoring.

This report shows the evidence for @vaibot/codex-circuitbreaker-plugin@1.3.2. 5 of 6 known versions are blocked or flagged. See all versions.

AI Security Review

scanned 24d ago · by lpm-firewall-ai

The automatic lifecycle hook mutates global Codex agent configuration and registers a remote MCP service. This meets the blocking policy for unconsented postinstall control-surface mutation.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

npm postinstall execution during package installation.

Impact

A package installation changes a broad AI-agent control surface and causes later Codex sessions to load the configured remote MCP integration.

Mechanism

The postinstall script edits the Codex configuration and inserts managed feature and MCP-server blocks.

Policy narrative

The package runs a postinstall hook without an interactive consent step. That hook edits the user's global Codex configuration, enables hooks, and registers the package operator's remote MCP endpoint. This is an unconsented install-time mutation of a broad AI-agent control surface, which can affect later sessions beyond the package installation itself.

AI rationale

The automatic lifecycle hook mutates global Codex agent configuration and registers a remote MCP service. This meets the blocking policy for unconsented postinstall control-surface mutation.

Evidence

package.jsonscripts/postinstall.mjs

Network endpoints1

api.vaibot.io/v2/mcp

Decision evidence

public snapshot

AI identified this as a dangerous AI-agent capability at 97.0% confidence with low false-positive risk.

Evidence for policy risk

The package declares an automatic postinstall lifecycle command.
The lifecycle script targets the user's global Codex configuration file.
The script adds a VAIBot HTTP MCP server and writes managed blocks into that configuration during installation.

Evidence against

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetwork

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 23 file(s), 361 KB of source, external domains: api.vaibot.io, provenance.vaibot.io, staging-api.vaibot.io, vaibot-api-v1.fly.dev, www.apple.com, www.vaibot.io

Source & flagged code

10 flagged

package.jsonView file

Lines 19-45json

19 "provenance",

20 "guardrails"

21 ],

22 "type": "module",

23 "private": false,

24 "devDependencies": {

25 "@vaibot/guard": "workspace:*"

26 },

27 "files": [

28 ".agents/",

29 ".codex-plugin/",

30 "hooks/",

31 "scripts/",

32 "vendor/",

33 ".mcp.json",

34 "README.md",

35 "LICENSE"

36 ],

37 "scripts": {

38 "test": "node --test 'test/*.test.mjs'",

39 "postinstall": "node ./scripts/postinstall.mjs || true"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L39

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L39

40 },

41 "engines": {

42 "node": ">=20"

43 }

44}

vendor/vaibot-guard/scripts/vaibot-guard.mjsView file

Lines 1-31javascript

1#!/usr/bin/env node

2/**

3 * vaibot-guard (MVP CLI)

4 *

5 * Implements the interface described in SKILL.md:

6 * - vaibot-guard precheck --intent '<json>'

7 * - vaibot-guard exec --intent '<json>' -- <command...>

8 * - vaibot-guard finalize --run_id <id> --result '<json>'

9 */

11import

vendor/vaibot-guard/scripts/vaibot-guard.mjs#virtual:normalized:round1View file

10L11: import http from "node:http"; L12: import { spawn } from "node:child_process"; L13: import fs from "node:fs"; ... L19: L20: const GUARD_HOST = process.env.VAIBOT_GUARD_HOST || "127.0.0.1"; L21:

Critical

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution with blocking evidence.

vendor/vaibot-guard/scripts/vaibot-guard.mjs#virtual:normalized:round1View on unpkg · L10

scripts/postinstall.mjsView file

Lines 1-24javascript

1#!/usr/bin/env node

2/**

3 * Postinstall script for @vaibot/codex-circuitbreaker-plugin.

4 *

5 * Idempotent. Adds two managed blocks to ~/.codex/config.toml so Codex picks

6 * up the plugin's hooks and the VAIBot MCP server on next session. Both blocks

7 * are wrapped with comment markers so user edits between markers never get

8 * overwritten.

9 *

10 * 1. [features] codex_hooks = true

scripts/pre-tool-use.mjs#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 2

High

Semantic Analysis Limited

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

scripts/pre-tool-use.mjs#virtual:normalized:round1View on unpkg

vendor/vaibot-guard/scripts/vaibot-guard-exec.mjsView file

•matchType = normalized_sha256 matchedPackage = @vaibot/codex-circuitbreaker-plugin@1.3.0 matchedPath = vendor/vaibot-guard/scripts/vaibot-guard-exec.mjs matchedIdentity = npm:[redacted]:1.3.0 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.

vendor/vaibot-guard/scripts/vaibot-guard-exec.mjsView on unpkg

vendor/vaibot-guard/scripts/lib/guard-launch.mjsView file

•matchType = normalized_sha256 matchedPackage = @vaibot/codex-circuitbreaker-plugin@1.3.0 matchedPath = vendor/vaibot-guard/scripts/lib/guard-launch.mjs matchedIdentity = npm:[redacted]:1.3.0 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.

vendor/vaibot-guard/scripts/lib/guard-launch.mjsView on unpkg

Source & flagged code

10 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./scripts/postinstall.mjs || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node ./scripts/postinstall.mjs || true

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

vendor/vaibot-guard/scripts/vaibot-guard.mjsView file

11import http from "node:http"; L12: import { spawn } from "node:child_process"; L13: import fs from "node:fs";

High

Child Process

Package source references child process execution.

vendor/vaibot-guard/scripts/vaibot-guard.mjs

Findings

2 Critical7 High4 Medium4 Low

CriticalSame File Env Network Executionvendor/vaibot-guard/scripts/vaibot-guard.mjs#virtual:normalized:round1

CriticalAi Agent Control Hijackscripts/postinstall.mjs

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processvendor/vaibot-guard/scripts/vaibot-guard.mjs

HighSemantic Analysis Limitedscripts/pre-tool-use.mjs#virtual:normalized:round1

HighKnown Malware Source Similarityvendor/vaibot-guard/scripts/vaibot-guard.mjs

HighKnown Malware Source Similarityvendor/vaibot-guard/scripts/vaibot-guard-exec.mjs

HighKnown Malware Source Similarityvendor/vaibot-guard/scripts/lib/guard-launch.mjs

HighPrevious Version Dangerous Deltavendor/vaibot-guard/scripts/vaibot-guard.mjs

Affected versions and remediation

This report applies to @vaibot/codex-circuitbreaker-plugin@1.3.2.

The versions list below shows the verdict for each recorded version.

Avoid installing @vaibot/codex-circuitbreaker-plugin@1.3.2. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-09-29 01:37:47.176Z (UTC).

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

Versions

6 known versions

1.3.2latestshownMaliciousSoft block: AI-agent control surfaceBlockPublishedSep 28, 2026, 10:29 PM 1.3.1MaliciousSoft block: AI-agent control surfaceBlockPublishedSep 27, 2026, 8:45 AM 1.3.0MaliciousSoft block: AI-agent control surfaceBlockPublishedSep 27, 2026, 3:54 AM 1.2.0MaliciousSoft block: AI-agent control surface

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

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Runtime surface

Behavioral surface

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Source & flagged code