registry / AI-agent control-surface risk / passbaton / 2.2.0

passbaton@2.2.0

Session continuity and persistent memory for Claude Code, OpenAI Codex CLI & Google Gemini CLI. Auto-injects past context on start, hands over hot files + build status across compaction, shares one local db across all three. Every feature is opt-in via `p

AI Security Review

scanned 10d ago · by lpm-firewall-ai

The postinstall hook makes unconsented changes to configuration used by multiple AI agents, registering package commands for recurring execution. This is a confirmed agent control-surface hijack and warrants blocking publication.

Static reason

High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source

Trigger

Installing the package through npm triggers its postinstall script.

Impact

The package’s commands are registered to run during agent session and tool events without explicit setup consent.

Mechanism

The installer writes hooks to Claude settings and, when those agent directories exist, to Codex and Gemini configuration files. The install path has no user confirmation gate.

Policy narrative

The npm postinstall script directly invokes the installer. The installer registers the package’s commands in Claude configuration and also writes hook entries to Codex and Gemini configuration when those agent directories exist. These changes enable the commands to run automatically during later agent events, without a separate confirmation step.

AI rationale

Evidence

package.jsondist/hooks/install.js

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 npm postinstall hook runs the installer with the install command.
The installer defaults to install when no command is supplied and calls the install function.
The install function saves hooks to Claude settings, including a package command on SessionStart.
The installer writes hook configuration to Codex’s hooks file.
The installer writes hook configuration to Gemini’s settings file.

Evidence against

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemShell

Supply chain

HighEntropyStrings

ManifestNo manifest risk signals triggered.

scanned 41 file(s), 497 KB of source

Source & flagged code

7 flagged

package.jsonView file

Lines 11-51json

11 "passbaton-hook-user-prompt": "dist/hooks/user-prompt-submit.js",

12 "passbaton-hook-post-tool": "dist/hooks/post-tool-use.js",

13 "passbaton-hook-pre-compact": "dist/hooks/pre-compact.js",

14 "passbaton-hook-session-end": "dist/hooks/session-end.js",

15 "claude-session-continuity-mcp": "dist/index.js",

16 "claude-session-hooks": "dist/hooks/install.js",

17 "claude-hook-session-start": "dist/hooks/session-start.js",

18 "claude-hook-user-prompt": "dist/hooks/user-prompt-submit.js",

19 "claude-hook-post-tool": "dist/hooks/post-tool-use.js",

20 "claude-hook-pre-compact": "dist/hooks/pre-compact.js",

21 "claude-hook-session-end": "dist/hooks/session-end.js"

22 },

23 "scripts": {

24 "build": "tsc",

25 "dev": "tsc --watch",

26 "start": "node dist/index.js",

27 "start:v2": "MCP_V2_ONLY=true node dist/index.js",

28 "test": "vitest run",

29 "test:watch": "vitest",

30 "test:coverage": "vitest run --coverage",

31 "postinstall": "node dist/hooks/install.js install 2>/dev/null || true",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L31

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L31

32 "prepublishOnly": "npm run build && npm test"

33 },

34 "keywords": [

35 "mcp",

36 "model-context-protocol",

37 "claude",

38 "claude-code",

39 "claude-code-memory",

40 "claude-code-hooks",

41 "codex",

42 "codex-cli",

43 "openai",

44 "gemini",

45 "gemini-cli",

46 "google",

47 "ai",

48 "context",

49 "memory",

50 "session",

51 "continuity",

dist/hooks/session-end.jsView file

Lines 17-57javascript

17import { logHookError, isCodexHost, isGeminiHost } from '../utils/logger.js';

18import { isEnabled } from '../utils/config.js';

19import { detectWorkspaceRoot } from '../utils/workspace.js';

20function getDbPath(cwd

dist/hooks/install.jsView file

Lines 1-25javascript

1#!/usr/bin/env node

2/**

3 * Claude Code Hooks + MCP Server 자동 설치 스크립트

4 *

5 * npm install 시 자동으로:

6 * 1. ~/.claude/settings.json에 Hook 등록

7 * 2. ~/.claude.json에 MCP 서버 등록

8 */

9import * as fs from

dist/utils/logger.jsView file

•Runtime or CLI code links a write operation to an explicit external AI-agent control path: export function loghookerror(hook, err) { try { const candidates = [ process.env.hook_error_log, path.join(process.cwd(), '.claude', 'hook-errors.log'), path.join(process.env.home || '/tmp', '.claude', 'hook-errors.log'), ].filter(boolean); const line = `[${new date().toisostring()}] hook=${hook} ${err instanceof error ? (err.stack || err.message) : string(err)}\n`; for (const p of candidates) { try { fs.appendfilesync(p, line); return; } catch { } } } catch { } }

High

External Ai Agent Control Surface Mutation

Runtime or CLI source writes behavior-bearing configuration into a user or project AI-agent control surface.

dist/utils/logger.jsView on unpkg

dist/hooks/session-end.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

High

Semantic Analysis Limited

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

dist/hooks/session-end.js#virtual:normalized:round1View on unpkg

Source & flagged code

7 flagged · loading source

package.jsonView file

•scripts.postinstall = node dist/hooks/install.js install 2>/dev/null || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node dist/hooks/install.js install 2>/dev/null || true

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

dist/hooks/session-end.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = passbaton@2.1.0 matchedIdentity = npm:cGFzc2JhdG9u:2.1.0 similarity = 0.795 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

Findings

1 Critical4 High3 Medium5 Low

CriticalAi Agent Control Hijackdist/hooks/install.js

HighInstall Time Lifecycle Scriptspackage.json

HighExternal Ai Agent Control Surface Mutationdist/utils/logger.js

HighSemantic Analysis Limiteddist/hooks/session-end.js#virtual:normalized:round1

HighPrevious Version Dangerous Deltadist/hooks/session-end.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowNon Install Lifecycle Scripts

LowScripts Present

LowWeak Cryptodist/hooks/session-end.js

LowFilesystem

LowHigh Entropy Strings

Affected versions and remediation

This report applies to passbaton@2.2.0.

See all versions of passbaton for other recorded verdicts.

Avoid installing passbaton@2.2.0. 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: 2026-10-12 20:08:40.299Z (UTC).

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

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Related packages

Other AI-agent control-surface risk packages

Runtime surface

Behavioral surface

Related packages

Other AI-agent control-surface risk packages

Source & flagged code