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@routerhub/agent-rules@1.5.222: AI-agent control-surface risk | LPM Firewall

registry / @routerhub/agent-rules / 1.5.222

@routerhub/agent-rules@1.5.222

Shared Copilot agent rules and guidelines for RouterHub projects

AI Security Review

scanned 22d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. On installation, the package changes consumer package-manager settings and writes AI-agent control files. It also installs a review-suppression instruction for those generated files.

Static reason

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

Trigger

Installing the package runs its npm postinstall hook.

Impact

Consumer projects can have lifecycle execution broadened, agent behavior changed, and review of generated instructions suppressed without an explicit setup command.

Mechanism

Automatic consumer-project mutation and AI-agent instruction injection.

Policy narrative

The npm postinstall hook finds the consumer project, changes its .npmrc to enable dependency pre/post scripts and disable the side-effect cache, then launches the package initializer. The initializer writes Copilot and Claude instruction surfaces, copies skills into .claude/skills, and creates a code-review instruction that tells reviewers to skip these generated files. This is an unconsented install-time mutation of a broad AI-agent control surface.

AI rationale

The package performs broad consumer-project AI-agent configuration changes automatically during npm installation and suppresses review of those changes. This meets the install-control-surface blocking boundary.

Evidence

package.jsonpostinstall.jsmerge.js.npmrc.gitignoreAGENTS.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

•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

scripts/agent-browser-cleanup.shView 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.

scripts/agent-browser-cleanup.shView on unpkg

•path = scripts/agent-browser-cleanup.sh kind = build_helper sizeBytes = 4442 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

scripts/agent-browser-cleanup.shView on unpkg

postinstall.jsView file

•matchType = normalized_sha256 matchedPackage = @routerhub/agent-rules@1.5.221 matchedPath = postinstall.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.221 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

•matchType = malicious_source_fingerprint_signature signature = d50b5f15aa258565 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @routerhub/agent-rules@1.5.221 matchedPath = postinstall.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.221 similarity = 1.000 shingleOverlap = 4 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

postinstall.jsView on unpkg

skills/screenshot-annotate/annotate.jsView file

•matchType = normalized_sha256 matchedPackage = @routerhub/agent-rules@1.5.221 matchedPath = skills/screenshot-annotate/annotate.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.221 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 10-48json

10 "files": [

11 "AGENTS.base.md",

12 "rules/",

13 "skills/",

14 "scripts/agent-browser-cleanup.sh",

15 "merge.js",

16 "AGENTS.private.example.md",

17 "PULL_REQUEST_TEMPLATE.md",

18 "postinstall.js",

19 "package.json",

20 "CHANGELOG.md",

21 "enabled-users.json"

22 ],

23 "scripts": {

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

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

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

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

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

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

30 "postinstall": "node postinstall.js"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L30

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L30

31 },

32 "repository": {

33 "type": "git",

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

35 },

36 "keywords": [

37 "copilot",

38 "agent",

39 "rules",

40 "guidelines"

41 ],

42 "author": "RouterHub Team",

43 "license": "MIT",

44 "engines": {

45 "node": ">=16.0.0"

46 }

47}

48

scripts/agent-browser-cleanup.shView 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.

scripts/agent-browser-cleanup.shView on unpkg

•path = scripts/agent-browser-cleanup.sh kind = build_helper sizeBytes = 4442 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

scripts/agent-browser-cleanup.shView on unpkg

postinstall.jsView file

•matchType = normalized_sha256 matchedPackage = @routerhub/agent-rules@1.5.221 matchedPath = postinstall.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.221 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

•matchType = malicious_source_fingerprint_signature signature = d50b5f15aa258565 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @routerhub/agent-rules@1.5.221 matchedPath = postinstall.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.221 similarity = 1.000 shingleOverlap = 4 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

postinstall.jsView on unpkg

skills/screenshot-annotate/annotate.jsView file

•matchType = normalized_sha256 matchedPackage = @routerhub/agent-rules@1.5.221 matchedPath = skills/screenshot-annotate/annotate.js matchedIdentity = npm:QHJvdXRlcmh1Yi9hZ2VudC1ydWxlcw:1.5.221 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