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@deppon/pm-toolkit@2.5.98: AI-agent control-surface risk | LPM Firewall

registry / @deppon/pm-toolkit / 2.5.98

@deppon/pm-toolkit@2.5.98

德邦 PRD 产品经理工具包脚手架：create 开箱工作台；init/update 同步工具

AI Security Review

scanned 7d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installing the dependency silently modifies consumer-project AI-agent configuration. It activates a JoyCode agent and registers MCP servers for JoyCode and Cursor, including an unpinned npx-loaded Playwright MCP.

Static reason

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

Trigger

npm postinstall when installed as a project dependency

Impact

A dependency installation changes foreign AI-agent control surfaces and causes later agent use to launch package-provided or remotely resolved tools.

Mechanism

automatic project AI-agent and MCP configuration mutation

Policy narrative

On npm installation, postinstall locates the consuming project and calls install with JoyCode, Cursor, agent, and version options enabled. The installer copies and activates an agent, rewrites both project MCP configuration files, and registers an unpinned npx @playwright/mcp@latest command. This is unconsented postinstall mutation of foreign AI-agent control surfaces, not merely an explicit scaffold command.

Rationale

The package’s primary assets appear package-aligned, but its automatic postinstall performs broad, active AI-agent and MCP configuration changes in every consuming project. That concrete install-time control-surface mutation meets the block boundary.

Evidence

package.jsonbin/postinstall.jslib/install.jsassets/mcp/proto-version-server.jsassets/mcp/line-repos-server.js.joycode/agent.json.joycode/agents/德邦PRD产品经理.md.joycode/modes/rules-zczvigx-/

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.postinstall = node bin/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node bin/postinstall.js

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

lib/install.jsView file

1Install-time code directly mutates a foreign AI-agent control surface: L710: if (changed && !DRY) { L711: fs.writeFileSync(pkgPath, JSON.stringify(pkg, null, 2) + '\n', 'utf8') L712: } ... L971: if (DRY) return L972: fs.mkdirSync(dir, { recursive: true }) L973: } ... L980: fs.rmSync(to, { recursive: true, force: true }) L981: fs.cpSync(from, to, { recursive: true }) L982: } ... L994: if (!text.endsWith('\r\n')) text += '\r\n' L995: fs.writeFileSync(to, text, 'utf8') L996: return Write operation from lib/install.js: L710: if (changed && !DRY) { L711: fs.writeFileSync(pkgPath, JSON.stringify(pkg, null, 2) + '\n', 'utf8') L712: } ... L971: if (DRY) return L972: fs.mkdirSync(dir, { recursive: true }) L973: } ... L980: fs.rmSync(to, { recursive: true, force: true }) L981: fs.cpSync(from, to, {

Critical

Ai Agent Control Hijack

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

lib/install.jsView on unpkg · L1

11const https = require('https') L12: const { execSync, spawnSync } = require('child_process') L13:

High

Child Process

Package source references child process execution.

lib/install.jsView on unpkg · L11

759try { L760: execSync(`npm i -D ${TOOLKIT_PKG_NAME}@${latest}`, { L761: cwd: targetRoot,

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

lib/install.jsView on unpkg · L759

assets/scripts/proto-version.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = @deppon/pm-toolkit@2.5.46 matchedIdentity = npm:QGRlcHBvbi9wbS10b29sa2l0:2.5.46 similarity = 0.438 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.

assets/scripts/proto-version.jsView on unpkg

17L18: const http = require('http'); L19: const fs = require('fs'); ... L21: const { URL } = require('url'); L22: const { exec } = require('child_process'); L23: ... L29: const CURRENT_FILE = path.join(VERSIONS, 'CURRENT.json'); L30: const DEFAULT_PORT = Number(process.env.PROTO_VERSION_PORT || 5502); L31: const WORKBENCH_PATH = '/prototype.html';

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

assets/scripts/proto-version.jsView on unpkg · L17

assets/scripts/PM-Start-Version-Service.batView file

•path = assets/scripts/PM-Start-Version-Service.bat kind = build_helper sizeBytes = 4520 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

assets/scripts/PM-Start-Version-Service.batView on unpkg

assets/skills/ui-ux-pro-max/scripts/tests/test_core.pyView file

•path = assets/skills/ui-ux-pro-max/scripts/tests/test_core.py kind = payload_in_excluded_dir sizeBytes = 5901 magicHex = [redacted]

High

Payload In Excluded Dir

Package hides binary, compressed, or executable-looking payloads in test/fixture/hidden paths.

assets/skills/ui-ux-pro-max/scripts/tests/test_core.pyView on unpkg

Source & flagged code

9 flagged

package.jsonView file

Lines 8-46json

8 "prd",

9 "pm",

10 "scaffold",

11 "joycode",

12 "cursor",

13 "skills"

14 ],

15 "bin": {

16 "deppon-pm": "bin/deppon-pm.js"

17 },

18 "main": "lib/install.js",

19 "files": [

20 "bin",

21 "lib",

22 "assets",

23 "LICENSE",

24 "README.md",

25 "CHANGELOG.md"

26 ],

27 "scripts": {

28 "postinstall": "node bin/postinstall.js",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L28

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L28

29 "sync:assets": "node scripts/sync-from-cmc-crm-prd.cjs",

30 "check:changelog": "node scripts/check-changelog.js",

31 "publish:auto": "node scripts/check-changelog.js && npm publish"

32 },

33 "engines": {

34 "node": ">=18"

35 },

36 "publishConfig": {

37 "registry": "https://registry.npmjs.org/",

38 "access": "public"

39 },

40 "repository": {

41 "type": "git",

42 "url": "",

43 "directory": "packages/deppon-pm-toolkit"

44 }

45}

46

lib/install.jsView file

Lines 1-31javascript

1#!/usr/bin/env node

2/**

Critical

Ai Agent Control Hijack

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

lib/install.jsView on unpkg · L1

3 * @deppon/pm-toolkit · 安装核心

4 * 从本包 assets/ 同步到目标项目（幂等、非破坏）。

5 */

6'use strict'

7

8const fs =

assets/scripts/proto-version.jsView file

Lines 1-37javascript

1#!/usr/bin/env node

2/**

3 * 原型版本快照（给产品经理用，不必会 git）

4 *

5 * npm run version:serve # 静态工作台 + 版本 API（默认 http://127.0.0.1:5502）

6 * npm run version:create -- --version=v20260718-am --pages=<lineId>/<主题>,…

7 * npm run version:list

8 *

9 * 快照目录：src/prototypes/versions/<version>/

10 * 当前基线：src/prototypes/versions/CURRENT.json

11

assets/scripts/PM-Start-Version-Service.batView file

•path = assets/scripts/PM-Start-Version-Service.bat kind = build_helper sizeBytes = 4520 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

assets/scripts/PM-Start-Version-Service.batView on unpkg

assets/skills/ui-ux-pro-max/scripts/tests/test_core.pyView file

•path = assets/skills/ui-ux-pro-max/scripts/tests/test_core.py kind = payload_in_excluded_dir sizeBytes = 5901 magicHex = [redacted]

High

Payload In Excluded Dir

Package hides binary, compressed, or executable-looking payloads in test/fixture/hidden paths.

assets/skills/ui-ux-pro-max/scripts/tests/test_core.pyView on unpkg