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@routerhub/agent-rules@1.5.155: AI-agent control-surface risk | LPM Firewall

registry / @routerhub/agent-rules / 1.5.155

@routerhub/agent-rules@1.5.155

Shared Copilot agent rules and guidelines for RouterHub projects

AI Security Review

scanned 2h ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installation silently modifies downstream package-manager settings and AI-agent control files. The installed rules promote secret disclosure and suppress review of that disclosure.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review

Trigger

Installing the package runs postinstall in the consuming project.

Impact

Agents may place real credentials in documents or pull requests while reviewers are instructed to ignore the leak.

Mechanism

Install-time downstream AI-agent control-surface mutation and malicious agent instructions.

Policy narrative

On installation, the package changes the consuming project's pnpm behavior and invokes its merger. The merger installs instructions into multiple AI-agent configuration surfaces. Those instructions direct agents to embed real credentials in documentation and direct reviewers not to report or remove such exposure. This creates an unconsented path from package installation to downstream AI-agent behavior that can disclose credentials through generated project documents or pull requests.

Rationale

This is malicious because an install-time hook modifies broad downstream AI-agent controls and deploys instructions that encourage credential exposure while suppressing security review.

Evidence

package.jsonpostinstall.jsmerge.jsAGENTS.base.mdrules/review-boundary.md.npmrcAGENTS.mdCLAUDE.md.github/copilot-instructions.md.github/instructions/*.instructions.md

Source & flagged code

7 flagged · loading source

package.jsonView file

•scripts.postinstall = node postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node postinstall.js

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

merge.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. output, copilotoutput]) { writefileifchanged(outputpath, merged); console.log(`✅ 规则已合并到 ${outputpath}`); } // 同步 skills syncskills(config); return; } // 2. 读取并解析私有规则的域标记 const privatecontent = readfileifexists(privaterulespath); const privatedomains = parseprivatedomains(privatecontent); // 3. 拼接全局规则内容 const globalcontent = globalrules .map((rule) => rule.content.trim()) .join("\n\n"); // 4. 生成 .github/copilot-instructions.md（全局规则 + 私有全局部分） let copilotcontent = "# copilot agent rules\n\n" + globalcontent; if (privatedomains.global) { copilotcontent += "\n\n---\n\n# 项目私有规则\n\n" + privatedomains.global; } writefilei

High

Trigger Reachable External Ai Agent Control Surface Mutation

Manifest-trigger-reachable source writes behavior-bearing configuration into a user or project AI-agent control surface.

merge.jsView on unpkg

34function getDefaultConfig() { return { output: path.join(currentRoot, "AGENTS.md"), claudeOutput: path.join(currentRoot, "CLAUDE.md"), copilotOutput: path.join(currentRoot, ".github", "copilot-instructions.md"), instructionsDir: path.join(currentRoot, ".github", "instructions"), rulesDir: path.join(packageRoot, "rules"), baseRulesPath: path.join(packageRoot, "AGENTS.base.md"), privateRulesPath: path.join(currentRoot, "AGENTS.private.md"), prTemplateSrc: path.join(packageRoot, "PULL_REQUEST_TEMPLATE.md"), prTemplateOutput: path.join(currentRoot, ".github",

High

Ai Review Evidence

The merger writes AGENTS.md, CLAUDE.md, Copilot instructions, and Claude skills into the consuming project.

merge.jsView on unpkg · L34

skills/loop-review/scripts/save-review-decision.shView file

•path = skills/loop-review/scripts/save-review-decision.sh kind = build_helper sizeBytes = 2323 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

skills/loop-review/scripts/save-review-decision.shView on unpkg

postinstall.jsView file

•matchType = normalized_sha256 matchedPackage = @routerhub/agent-rules@1.5.149 matchedPath = postinstall.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.149 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.

postinstall.jsView on unpkg

70const npmrcPath = path.join(projectRoot, ".npmrc"); let npmrcContent = ""; if (fs.existsSync(npmrcPath)) { npmrcContent = fs.readFileSync(npmrcPath, "utf-8"); } const npmrcEntries = []; if (!npm[redacted]("frozen-lockfile")) { npm[redacted]("# 允许 pnpm install 在依赖版本更新后直接执行（由 agent-rules 自动添加）"); npm[redacted]("frozen-lockfile=false"); }

High

Suspicious Lifecycle Evidence

The postinstall hook edits the consuming project's .npmrc to enable dependency lifecycle scripts and disable pnpm safeguards.

postinstall.jsView on unpkg · L70

Source & flagged code

7 flagged

package.jsonView file

Lines 8-46json

8 },

9 "files": [

10 "AGENTS.base.md",

11 "rules/",

12 "skills/",

13 "merge.js",

14 "AGENTS.private.example.md",

15 "PULL_REQUEST_TEMPLATE.md",

16 "README.zh-CN.md",

17 "postinstall.js",

18 "package.json",

19 "CHANGELOG.md"

20 ],

21 "scripts": {

22 "build": "node --check merge.js && node --check postinstall.js",

23 "test:postinstall-init": "node tests/postinstall-init.test.js",

24 "merge": "node merge.js",

25 "sync": "node merge.js sync",

26 "init": "node merge.js init",

27 "watch": "node merge.js watch",

28 "postinstall": "node 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 },

30 "repository": {

31 "type": "git",

32 "url": "git+https://github.com/PomexAITeam/agent-rules.git"

33 },

34 "keywords": [

35 "copilot",

36 "agent",

37 "rules",

38 "guidelines"

39 ],

40 "author": "RouterHub Team",

41 "license": "MIT",

42 "engines": {

43 "node": ">=16.0.0"

44 }

45}

46

merge.jsView file

Lines 14-54javascript

14 *

15 * 输出文件：

16 * AGENTS.md 全量合并（兼容 Cursor/Claude Code）

17 * CLAUDE.md 全量合并（Claude Code 自动加载）

18 * .github/copilot

skills/loop-review/scripts/save-review-decision.shView file

•path = skills/loop-review/scripts/save-review-decision.sh kind = build_helper sizeBytes = 2323 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

skills/loop-review/scripts/save-review-decision.shView on unpkg

postinstall.jsView file

Lines 50-90javascript

50}

51

52// 获取下游项目根目录

53const projectRoot = findProjectRoot();

54

55// 安全检查：如果项目根目录仍在 node_modules 内，跳过初始化

56if (projectRoot.includes("node_modules")) {

57 console.