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memgineering@0.18.3: AI-agent control-surface risk | LPM Firewall

registry / memgineering / 0.18.3

memgineering@0.18.3

One memory for the AI you connect. Recall, remember, and revise a brain your agents share — stored in your own folder.

AI Security Review

scanned 3h ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. A global-install postinstall message directs an AI agent to run setup autonomously. Setup can modify global AI-agent instruction, skill, and hook files and then use an authenticated hosted API.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

Global npm installation followed by an agent obeying the postinstall instruction.

Impact

It can persist package guidance and hooks in Claude and Codex global configuration without a direct user command or verified consent.

Mechanism

Agent-directed setup that writes foreign agent control files and contacts a hosted API.

Policy narrative

On global installation, the postinstall script addresses any AI agent consuming package output and orders it to run a browser-based setup. That setup writes package-controlled content into global Claude and Codex instruction, skill, and hook locations, then communicates with the hosted API using bearer authentication. The installer text is designed to bypass the usual agent-to-user handoff, so the control-surface mutation is reached through an install-time social-engineering chain.

Rationale

The package combines an automatic lifecycle hook, direct AI-agent instructions to act without a user command, and persistent writes to broad foreign AI-agent control surfaces. This is concrete install-hook abuse rather than ordinary package setup.

Evidence

package.jsonscripts/postinstall.mjsdist/index.js~/.claude/CLAUDE.md~/.claude/skills~/.claude/settings.json~/.codex/AGENTS.md~/.codex/skills~/.codex/hooks.json

Source & flagged code

6 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

dist/index.jsView file

15function brandHome() { L16: return process.env[BRAND.homeEnvVar] ?? join(homedir(), BRAND.homeDirName); L17: } ... L118: function isInteractive() { L119: return Boolean(process.stdout.isTTY) && !jsonMode; L120: } L121: function printHuman(text) { L122: if (!jsonMode) process.stdout.write(text + "\n"); L123: } ... L134: for (let i = 0; i < input.length; i++) { L135: const code = input.charCodeAt(i); L136: if (code === 27 && input[i + 1] === "]" || code === 157) {

Critical

Credential Exfiltration

Source appears to send environment or credential material to an external endpoint.

dist/index.jsView on unpkg · L15

15Trigger-reachable chain: manifest.main -> dist/index.js L15: function brandHome() { L16: return process.env[BRAND.homeEnvVar] ?? join(homedir(), BRAND.homeDirName); L17: } ... L118: function isInteractive() { L119: return Boolean(process.stdout.isTTY) && !jsonMode; L120: } L121: function printHuman(text) { L122: if (!jsonMode) process.stdout.write(text + "\n"); L123: } ... L134: for (let i = 0; i < input.length; i++) { L135: const code = input.charCodeAt(i); L136: if (code === 27 && input[i + 1] === "]" || code === 157) {

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

dist/index.jsView on unpkg · L15

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/index.js: * it writes into somebody else's `~/.claude` and `~/.codex`. Conflating them import { mkdir, readFile, rename, rm, writeFile } from "fs/promises"; await writeFile(tmp, body, { encoding: "utf8", mode: 384 }); import { mkdir as mkdir3, readFile as readFile3, unlink, writeFile as writeFile2 } from "fs/promises"; await writeFile2(credentialsPath(), JSON.stringify(credentials, null, 2) + "\n", { import { mkdir as mkdir4, readFile as readFile4, unlink as unlink2, writeFile as writeFile3 } from "fs/promises"; await writeFile3(pendingLoginPath(), JSON.stringify(pending, null, 2) + "\n", { const base = args.baseUrl ?? apiUrl();

High

Credential Redirect Persistence

Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.

dist/index.jsView on unpkg

15Trigger-reachable credential exfiltration chain: manifest.main -> dist/index.js L15: function brandHome() { L16: return process.env[BRAND.homeEnvVar] ?? join(homedir(), BRAND.homeDirName); L17: } ... L118: function isInteractive() { L119: return Boolean(process.stdout.isTTY) && !jsonMode; L120: } L121: function printHuman(text) { L122: if (!jsonMode) process.stdout.write(text + "\n"); L123: } ... L134: for (let i = 0; i < input.length; i++) { L135: const code = input.charCodeAt(i); L136: if (code === 27 && input[i + 1] === "]" || code === 157) {

High

Trigger Reachable Credential Exfiltration

A manifest entrypoint or package-local install chain reaches credential exfiltration behavior.

dist/index.jsView on unpkg · L15

Source & flagged code

6 flagged

package.jsonView file

Lines 16-56json

16 "bin": {

17 "memgineering": "bin/memgineering.js"

18 },

19 "main": "./dist/index.js",

20 "files": [

21 "bin",

22 "dist",

23 "assets",

24 "scripts",

25 "README.md",

26 "CHANGELOG.md",

27 "NOTICE"

28 ],

29 "scripts": {

30 "dev": "tsx src/index.ts",

31 "build": "tsup && rm -rf assets && mkdir -p assets && node scripts/copy-skills.mjs",

32 "typecheck": "tsc --noEmit",

33 "test": "vitest run",

34 "test:unit": "vitest run",

35 "prepublishOnly": "pnpm build",

36 "postinstall": "node scripts/postinstall.mjs"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L36

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L36

37 },

38 "dependencies": {

39 "@iarna/toml": "^2.2.5",

40 "commander": "^12.1.0",

41 "kleur": "^4.1.5",

42 "prompts": "^2.4.2",

43 "semver": "^7.8.4",

44 "string-width": "^7.2.0",

45 "yaml": "^2.9.0",

46 "zod": "^3.23.8"

47 },

48 "devDependencies": {

49 "@kordis/config": "workspace:*",

50 "@kordis/contracts": "workspace:*",

51 "@kordis/harness-schema": "workspace:*",

52 "@kordis/memory-engine": "workspace:*",

53 "@kordis/storage-adapter": "workspace:*",

54 "@types/node": "^22.9.0",

55 "@types/prompts": "^2.4.9",

56 "@types/semver": "^7.5.8",

dist/index.jsView file

15function brandHome() { L16: return process.env[BRAND.homeEnvVar] ?? join(homedir(), BRAND.homeDirName); L17: } ... L118: function isInteractive() { L119: return Boolean(process.stdout.isTTY) && !jsonMode; L120: } L121: function printHuman(text) { L122: if (!jsonMode) process.stdout.write(text + "\n"); L123: } ... L134: for (let i = 0; i < input.length; i++) { L135: const code = input.charCodeAt(i); L136: if (code === 27 && input[i + 1] === "]" || code === 157) {

Critical

Credential Exfiltration

Source appears to send environment or credential material to an external endpoint.

dist/index.jsView on unpkg · L15

15Trigger-reachable chain: manifest.main -> dist/index.js L15: function brandHome() { L16: return process.env[BRAND.homeEnvVar] ?? join(homedir(), BRAND.homeDirName); L17: } ... L118: function isInteractive() { L119: return Boolean(process.stdout.isTTY) && !jsonMode; L120: } L121: function printHuman(text) { L122: if (!jsonMode) process.stdout.write(text + "\n"); L123: } ... L134: for (let i = 0; i < input.length; i++) { L135: const code = input.charCodeAt(i); L136: if (code === 27 && input[i + 1] === "]" || code === 157) {

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

dist/index.jsView on unpkg · L15

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/index.js: * it writes into somebody else's `~/.claude` and `~/.codex`. Conflating them import { mkdir, readFile, rename, rm, writeFile } from "fs/promises"; await writeFile(tmp, body, { encoding: "utf8", mode: 384 }); import { mkdir as mkdir3, readFile as readFile3, unlink, writeFile as writeFile2 } from "fs/promises"; await writeFile2(credentialsPath(), JSON.stringify(credentials, null, 2) + "\n", { import { mkdir as mkdir4, readFile as readFile4, unlink as unlink2, writeFile as writeFile3 } from "fs/promises"; await writeFile3(pendingLoginPath(), JSON.stringify(pending, null, 2) + "\n", { const base = args.baseUrl ?? apiUrl();