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peaks-loop@4.0.11: AI-agent control-surface risk | LPM Firewall

registry / peaks-loop / 4.0.11

peaks-loop@4.0.11

Loop Engineering CLI — workflow primitive / loop guards / evaluators / slice orchestration

AI Security Review

scanned 10d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installing the package executes a postinstall hook that installs package-controlled skills, agents, and output styles into broad third-party AI-agent control surfaces. It also sets Claude Code's active output style and can launch an automatic project upgrade.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

npm postinstall

Impact

Subsequent AI-agent sessions can load package-supplied instructions across multiple user-level tool configurations.

Mechanism

unconsented cross-platform AI-agent configuration and prompt installation

Policy narrative

On npm installation, package.json invokes scripts/install-skills.mjs. Its main path deliberately iterates all configured AI platforms and links bundled skills into user-home agent skill directories, copies bundled agents and output styles, and changes ~/.claude/settings.json to select the package output style. These mutations occur without an explicit user CLI command and extend beyond a package-owned configuration surface, creating persistent control over future agent behavior.

Rationale

Direct source inspection confirms unconsented postinstall mutation of broad, foreign AI-agent control surfaces. This meets the install-control-surface blocking policy regardless of the absence of exfiltration.

Evidence

package.jsonscripts/install-skills.mjs~/.claude/skills/*~/.trae/skills/*~/.trae-cn/skills/*~/.codex/skills/*~/.cursor/skills/*~/.qoder/skills/*~/.tongyi-lingma/skills/*

Source & flagged code

13 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./scripts/install-skills.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

dist/shared/process.jsView file

1import { execFile } from 'node:child_process'; L2: export async function execCommand(command, args, options) {

High

Child Process

Package source references child process execution.

dist/shared/process.jsView on unpkg · L1

dist/services/upgrade/upgrade-service.jsView file

182// npm install postinstall creates `peaks` → `peaks.sh` on L183: // Windows). cmd.exe (the default Windows shell) cannot run L184: // `.sh` scripts directly, so the shim fails with "unknown

High

Shell

Package source references shell execution.

dist/services/upgrade/upgrade-service.jsView on unpkg · L182

dist/cli/commands/governance-classify-contract-commands.jsView file

151try { L152: const { execFileSync } = require('node:child_process'); L153: stdout = execFileSync('git', ['diff', '--shortstat', 'HEAD'], {

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/cli/commands/governance-classify-contract-commands.jsView on unpkg · L151

dist/services/code/job-shape-decision.jsView file

92try { L93: parsed = JSON.parse(raw); L94: }

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/services/code/job-shape-decision.jsView on unpkg · L92

scripts/install-skills.mjsView file

1#!/usr/bin/env node L2: import { closeSync, constants, existsSync, fchmodSync, fstatSync, lstatSync, mkdirSync, openSync, readFileSync, readlinkSync, realpathSync, readdirSync, renameSync, symlinkSync, un... L3: import { spawnSync } from 'node:child_process'; ... L285: fchmodSync(fd, 0o600); L286: writeFileSync(fd, content, 'utf8'); L287: const writeFd = fd; ... L314: fchmodSync(fd, 0o600); L315: writeFileSync(fd, content, 'utf8'); L316: const writeFd = fd; ... L366: * cannot import the TS service at runtime. The dispatch: L367: * - Look for `.claude`, `.trae`, `.codex`, `.cursor`, `.qoder`, L368: * `.tongyi-lingma` in the project root in that insertion order

Critical

Ai Agent Control Hijack

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

scripts/install-skills.mjsView on unpkg · L1

dist/cli/commands/hooks-commands.jsView file

•Runtime or CLI code links a write operation to an explicit external AI-agent control path: function readondiskdenyentries(settings) { const permissions = settings.permissions; if (!permissions || typeof permissions !== 'object' || array.isarray(permissions)) return []; const deny = permissions.deny; if (!array.isarray(deny)) return []; return deny.filter((d) => typeof d === 'string'); } function copybridgehookifpresent(userhome) { const source = resolve(__dirname, '..', '..', 'services', 'hooks', 'pre-tool-superpowers-bridge.sh'); const target = resolve(userhome, '.claude', 'skills', 'peaks-code', 'hooks', 'pre-tool-superpowers-bridge.sh'); if (!existssync(source)) { return { copied: false, source, target }; } mkdirsync(dirnam

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/cli/commands/hooks-commands.jsView on unpkg

dist/cli/commands/playwright-commands.jsView file

27* The CLI does NOT bundle `playwright-mcp`; it shells out to L28: * `npx playwright-mcp@latest` (G22 / NG3). peaks-loop is the lifecycle L29: * orchestrator, not the install medium. ... L31: import { createHash } from 'node:crypto'; L32: import { spawn } from 'node:child_process'; L33: import { existsSync, mkdirSync, readFileSync, writeFileSync, readdirSync, unlinkSync } from 'node:fs';

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

dist/cli/commands/playwright-commands.jsView on unpkg · L27

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.0-beta.30 matchedPath = dist/cli/commands/playwright-commands.js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.0-beta.30 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.

dist/cli/commands/playwright-commands.jsView on unpkg

dist/services/code-review/ocr-service.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.0-beta.30 matchedPath = dist/services/code-review/ocr-service.js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.0-beta.30 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.

dist/services/code-review/ocr-service.jsView on unpkg

dist/services/artifacts/artifact-service.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.0-beta.30 matchedPath = [redacted]-service.js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.0-beta.30 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.

dist/services/artifacts/artifact-service.jsView on unpkg

dist/services/runtime/vendors/codex.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.0-beta.30 matchedPath = [redacted].js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.0-beta.30 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.

dist/services/runtime/vendors/codex.jsView on unpkg

dist/services/runtime/vendors/copilot.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.0-beta.30 matchedPath = [redacted].js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.0-beta.30 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.

dist/services/runtime/vendors/copilot.jsView on unpkg