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@routerhub/agent-rules@1.5.196: AI-agent control-surface risk | LPM Firewall

registry / @routerhub/agent-rules / 1.5.196

@routerhub/agent-rules@1.5.196

Shared Copilot agent rules and guidelines for RouterHub projects

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installing the package automatically mutates the consumer project’s package-manager settings and AI-agent control files. It injects rules and skills into Copilot and Claude locations, including a rule to skip review of its generated artifacts.

Static reason

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

Trigger

npm postinstall during dependency installation or update.

Impact

Consumer AI agents can receive package-controlled instructions that suppress review and normalize exposing real sensitive values in generated documentation.

Mechanism

Install-time mutation of consumer AI-agent configuration and lifecycle settings.

Policy narrative

The manifest invokes postinstall. That script alters .npmrc to enable dependency lifecycle hooks, then runs merge.js in the consumer project. merge.js writes broad Copilot and Claude control files, copies skills, and creates an instruction telling reviewers to skip generated artifacts. The installed rule set also directs use of real sensitive values in documentation while constraining review reporting.

AI rationale

This is an unconsented install-time mutation of broad consumer AI-agent control surfaces, reinforced by lifecycle-setting changes and reviewer-suppression payloads. The absence of observed exfiltration does not remove the concrete control-hijack chain.

Evidence

package.jsonpostinstall.jsmerge.jsAGENTS.base.md.npmrcAGENTS.mdCLAUDE.mdAGENTS.private.md.github/copilot-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

21"scripts": { "build": "node --check merge.js && node --check postinstall.js", "test:postinstall-init": "node tests/postinstall-init.test.js", "merge": "node merge.js", "sync": "node merge.js sync", "init": "node merge.js init", "watch": "node merge.js watch", "postinstall": "node postinstall.js" }

High

Suspicious Lifecycle Evidence

The package runs postinstall automatically.

package.jsonView on unpkg · L21

•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. ns.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; } writefileifchanged(copilotoutput, copilotcontent); console.log(`✅ 全局规则已生成: ${copilotoutput}`); // 5. 生成 .github/instructions/*.instructions.md（各域规则） ensureparentdir(path.join(instructionsdir, "_placeholder")); for (const rule of domainrules) { let domaincontent = rule.content.trim(); // 追加对应域的私有规则 const privatedomaincontent = privatedomains.domains[rule.meta.outputname]; if (privatedomaincontent) { domaincontent += "\n\n---\n\n# 项目私有规则（" +

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

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@1.5.188 matchedPath = postinstall.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.188 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

skills/screenshot-annotate/annotate.jsView file

•matchType = normalized_sha256 matchedPackage = @routerhub/agent-rules@1.5.188 matchedPath = skills/screenshot-annotate/annotate.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.188 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.

skills/screenshot-annotate/annotate.jsView on unpkg

Source & flagged code

7 flagged

package.jsonView file

Lines 1-46json

1{

2 "name": "@routerhub/agent-rules",

3 "version": "1.5.196",

4 "description": "Shared Copilot agent rules and guidelines for RouterHub projects",

5 "main": "AGENTS.base.md",

6 "bin": {

7 "agent-rules": "merge.js"

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 "postinstall.js",

17 "package.json",

18 "CHANGELOG.md",

19 "enabled-users.json"

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 },

High

Suspicious Lifecycle Evidence

The package runs postinstall automatically.

package.jsonView on unpkg · L21

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

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. ns.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; } writefileifchanged(copilotoutput, copilotcontent); console.log(`✅ 全局规则已生成: ${copilotoutput}`); // 5. 生成 .github/instructions/*.instructions.md（各域规则） ensureparentdir(path.join(instructionsdir, "_placeholder")); for (const rule of domainrules) { let domaincontent = rule.content.trim(); // 追加对应域的私有规则 const privatedomaincontent = privatedomains.domains[rule.meta.outputname]; if (privatedomaincontent) { domaincontent += "\n\n---\n\n# 项目私有规则（" +

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

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@1.5.188 matchedPath = postinstall.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.188 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

skills/screenshot-annotate/annotate.jsView file

•matchType = normalized_sha256 matchedPackage = @routerhub/agent-rules@1.5.188 matchedPath = skills/screenshot-annotate/annotate.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.188 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.

skills/screenshot-annotate/annotate.jsView on unpkg