registry / AI-agent capability abuse / @rubytech/create-maxy-code / 0.1.563

@rubytech/create-maxy-code@0.1.563

Install Maxy — AI for Productive People

AI Security Review

scanned 3mo ago · by lpm-firewall-ai

The package contains a concrete dangerous AI-agent capability, but it is activated by an explicit installer command and targets a package-owned Claude configuration rather than a broad default surface. No malicious exfiltration or stealth payload execution was confirmed.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

User runs create-maxy-code

Impact

Later Maxy-scoped Claude sessions can execute tools without normal permission prompts.

Mechanism

Seeds bypassPermissions and installs Claude plugins

AI rationale

Evidence

package.jsondist/index.jsdist/permissions-seed.jsdist/specialist-registration.js~/.maxy-code/.claude/settings.json~/.maxy-code/.claude/agents/

Decision evidence

public snapshot

AI called this Suspicious at 98.0% confidence as Dangerous Capability with low false-positive risk.

Evidence for warning

dist/permissions-seed.js writes Claude defaultMode=bypassPermissions.
dist/index.js invokes the seed during CLI installation.
dist/index.js installs/registers Claude plugins at user scope.

Evidence against

package.json has no preinstall/install/postinstall hook.
CLI changes occur only when create-maxy-code is run.
Claude state is redirected to the brand-specific ~/.maxy-code/.claude path.
No credential-exfiltration endpoint or remote-code execution chain was confirmed.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNativeBindingsNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedObfuscatedProtestwareTelemetryUrlStrings

Source & flagged code

20 flagged

payload/platform/scripts/smoke-boot-services.shView file

349patternName = generic_password severity = medium line = 349 matchedText = local ne...:-}"

Medium

Secret Pattern

Package contains a possible secret pattern.

payload/platform/scripts/smoke-boot-services.shView on unpkg · L349

dist/index.jsView file

142for (const host of ["registry.npmjs.org", "github.com"]) { L143: const dns = spawnSync("host", ["-W", "5", host], { encoding: "utf-8", stdio: "pipe", timeout: 10_000 }); L144: logFile(`DNS ${host}: ${dns.status === 0 ? "OK" : "FAIL"} — ${(dns.stdout || dns.stderr || "").trim().split("\n")[0]}`); ... L149: "--connect-timeout", "10", L150: "https://registry.npmjs.org/", L151: ], { encoding: "utf-8", stdio: "pipe", timeout: 15_000 }); ... L156: function captureNpmDebugLog() { L157: const logsDir = resolve(process.env.HOME ?? "/root", ".npm/_logs"); L158: if (!existsSync(logsDir))

Critical

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution with blocking evidence.

dist/index.jsView on unpkg · L142

1#!/usr/bin/env node L2: import { execFileSync, spawn, spawnSync } from "node:child_process"; L3: import { existsSync, mkdirSync, writeFileSync, cpSync, readFileSync, rmSync, readdirSync, appendFileSync, openSync, closeSync, chmodSync, statSync, realpathSync, accessSync, consta... ... L9: import { buildBrandCronBlock, mergeBrandCronBlock } from "./cron-registration.js"; L10: import { validateTierFlag, validateEntitlementBase64, applyTierToAccountConfig, entitlementPath } from "./tier-flag.js"; L11: import { parseOsRelease, isUbuntuLike as isUbuntuLikePure, parseAptCacheCandidate, decideAptResolution, } from "./apt-resolve.js"; ... L52: } L53: const INSTALL_DIR = resolve(process.env.HOME ?? "/root", BRAND.installDir); L54: const PERSIST_DIR = resolve(process.env.HOME ?? "/root", BRAND.co

Critical

Download Execute

Source downloads or fetches remote code and executes it.

dist/index.jsView on unpkg · L1

1Trigger-reachable chain: manifest.bin -> dist/index.js L1: #!/usr/bin/env node L2: import { execFileSync, spawn, spawnSync } from "node:child_process"; L3: import { existsSync, mkdirSync, writeFileSync, cpSync, readFileSync, rmSync, readdirSync, appendFileSync, openSync, closeSync, chmodSync, statSync, realpathSync, accessSync, consta... ... L9: import { buildBrandCronBlock, mergeBrandCronBlock } from "./cron-registration.js"; L10: import { validateTierFlag, validateEntitlementBase64, applyTierToAccountConfig, entitlementPath } from "./tier-flag.js"; L11: import { parseOsRelease, isUbuntuLike as isUbuntuLikePure, parseAptCacheCandidate, decideAptResolution, } from "./apt-resolve.js"; ... L52: } L53: const INSTALL_DIR = resolve(process.env.HOME ?? "/root", BRAND.installDir); L54: const PERS

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 · L1

•matchType = previous_version_dangerous_delta matchedPackage = @rubytech/create-maxy-code@0.1.579 matchedIdentity = npm:[redacted]:0.1.579 similarity = 0.833 summary = stored previous version shares package body but lacks this dangerous source file

Critical

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

dist/index.jsView on unpkg

High

Child Process

Package source references child process execution.

dist/index.jsView on unpkg · L1

537// Fetch + dearmor the signing key, write to /etc/apt/trusted.gpg.d/. Pipe L538: // composition runs through bash -c so the curl|gpg pipeline is one L539: // privileged command rather than two separate sudo escalations.

High

Shell

Package source references shell execution.

dist/index.jsView on unpkg · L537

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

dist/index.jsView on unpkg · L1

1Trigger-reachable persistence chain: manifest.bin -> dist/index.js L1: #!/usr/bin/env node L2: import { execFileSync, spawn, spawnSync } from "node:child_process"; L3: import { existsSync, mkdirSync, writeFileSync, cpSync, readFileSync, rmSync, readdirSync, appendFileSync, openSync, closeSync, chmodSync, statSync, realpathSync, accessSync, consta... ... L9: import { buildBrandCronBlock, mergeBrandCronBlock } from "./cron-registration.js"; L10: import { validateTierFlag, validateEntitlementBase64, applyTierToAccountConfig, entitlementPath } from "./tier-flag.js"; L11: import { parseOsRelease, isUbuntuLike as isUbuntuLikePure, parseAptCacheCandidate, decideAptResolution, } from "./apt-resolve.js"; ... L52: } L53: const INSTALL_DIR = resolve(process.env.HOME ?? "/root", BRAND.installDir); L54

High

Trigger Reachable Persistence

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

dist/index.jsView on unpkg · L1

285function canSudo() { L286: const result = spawnSync("sudo", ["-n", "true"], { stdio: "pipe", timeout: 5_000 }); L287: return result.status === 0; ... L289: /** True when the npm global prefix's node_modules dir is writable by the current L290: * user (nvm/Homebrew installs) — meaning `npm install -g` needs no sudo. */ L291: function npm[redacted]() {

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

dist/index.jsView on unpkg · L285

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

dist/index.jsView on unpkg · L1

payload/platform/plugins/memory/mcp/scripts/graph/accept.shView file

20Cross-file remote execution chain: [redacted].sh spawns dist/index.js; helper contains network access plus dynamic code execution. L20: # L21: # Exit codes: L22: # 0 all PASS ... L36: if ! command -v uvx >/dev/null 2>&1; then L37: echo "FAIL: uvx not on PATH — run: curl -LsSf https://astral.sh/uv/install.sh | sh -s -- -y" >&2 L38: exit 2 ... L64: node -e " L65: const { spawn } = require('node:child_process'); L66: const proc = spawn('node', [process.env.SHIM], { stdio: ['pipe', 'pipe', 'inherit'] }); L67: let buf = ''; L68: proc.stdout.on('data', (chunk) => { buf += chunk.toString('utf8'); }); L69: const send = (obj) => proc.stdin.write(JSON.stringify(obj) + '\n');

High

Cross File Remote Execution Context

Source spawns a local helper that also contains network and dynamic execution context; review data flow before blocking.

payload/platform/plugins/memory/mcp/scripts/graph/accept.shView on unpkg · L20

payload/platform/plugins/prompt-optimiser/skills/prompt-optimiser/__tests__/restatement-ladder.test.shView file

•path = payload/platform/plugins/prompt-optimiser/skills/prompt-optimiser/__tests__/restatement-ladder.test.sh kind = payload_in_excluded_dir sizeBytes = 1019 magicHex = [redacted]

High

Payload In Excluded Dir

Package hides binary, compressed, or executable-looking payloads in test/fixture/hidden paths.

payload/platform/plugins/prompt-optimiser/skills/prompt-optimiser/__tests__/restatement-ladder.test.shView on unpkg

•path = payload/platform/plugins/prompt-optimiser/skills/prompt-optimiser/__tests__/restatement-ladder.test.sh kind = build_helper sizeBytes = 1019 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

payload/platform/plugins/prompt-optimiser/skills/prompt-optimiser/__tests__/restatement-ladder.test.shView on unpkg

payload/server/public/assets/chunk-CIAEETIT-CpsybR7q.js.gzView file

•path = [redacted]-CIAEETIT-CpsybR7q.js.gz kind = compressed_blob sizeBytes = 352 magicHex = [redacted]

Medium

Ships Compressed Blob

Package ships compressed or archive-like blobs.

payload/server/public/assets/chunk-CIAEETIT-CpsybR7q.js.gzView on unpkg

payload/server/public/assets/chunk-5FUZZQ4R-CEIokxZS.js.brView file

•path = [redacted]-5FUZZQ4R-CEIokxZS.js.br kind = high_entropy_blob sizeBytes = 20239 magicHex = [redacted]

High

Ships High Entropy Blob

Package ships high-entropy non-source blobs.

payload/server/public/assets/chunk-5FUZZQ4R-CEIokxZS.js.brView on unpkg

payload/platform/plugins/cloudflare/mcp/dist/lib/cloudflared.jsView file

•matchType = normalized_sha256 matchedPackage = @rubytech/create-sitedesk-code@0.1.459 matchedPath = [redacted].js matchedIdentity = npm:[redacted]:0.1.459 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.

payload/platform/plugins/cloudflare/mcp/dist/lib/cloudflared.jsView on unpkg

payload/platform/plugins/memory/mcp/dist/tools/memory-read-attachment.jsView file

•matchType = normalized_sha256 matchedPackage = @rubytech/create-sitedesk-code@0.1.459 matchedPath = [redacted]-read-attachment.js matchedIdentity = npm:[redacted]:0.1.459 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.

payload/platform/plugins/memory/mcp/dist/tools/memory-read-attachment.jsView on unpkg

dist/brew-install.jsView file

•matchType = normalized_sha256 matchedPackage = @rubytech/create-sitedesk-code@0.1.459 matchedPath = dist/brew-install.js matchedIdentity = npm:[redacted]:0.1.459 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/brew-install.jsView on unpkg

payload/platform/plugins/url-get/mcp/dist/lib/summarise.jsView file

•matchType = normalized_sha256 matchedPackage = @rubytech/create-sitedesk-code@0.1.459 matchedPath = payload/platform/plugins/url-get/mcp/dist/lib/summarise.js matchedIdentity = npm:[redacted]:0.1.459 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.

payload/platform/plugins/url-get/mcp/dist/lib/summarise.jsView on unpkg

Source & flagged code

20 flagged · loading source

payload/platform/scripts/smoke-boot-services.shView file

349patternName = generic_password severity = medium line = 349 matchedText = local ne...:-}"

Medium

Secret Pattern

Package contains a possible secret pattern.

payload/platform/scripts/smoke-boot-services.shView on unpkg · L349

dist/index.jsView file

Critical

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution with blocking evidence.

dist/index.jsView on unpkg · L142

Findings

4 Critical12 High9 Medium9 Low

CriticalSame File Env Network Executiondist/index.js

CriticalDownload Executedist/index.js

CriticalTrigger Reachable Dangerous Capabilitydist/index.js

CriticalPrevious Version Dangerous Deltadist/index.js

HighChild Processdist/index.js

HighShelldist/index.js

HighSandbox Evasion Gated Capabilitydist/index.js

HighCross File Remote Execution Contextpayload/platform/plugins/memory/mcp/scripts/graph/accept.sh

HighTrigger Reachable Persistencedist/index.js

HighRuntime Package Installdist/index.js

HighShips High Entropy Blobpayload/server/public/assets/chunk-5FUZZQ4R-CEIokxZS.js.br

Affected versions and remediation

This report applies to @rubytech/create-maxy-code@0.1.563.

See all versions of @rubytech/create-maxy-code for other recorded verdicts.

Review the evidence and your use of @rubytech/create-maxy-code@0.1.563 before allowing it. Restrict the permissions described in this report.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.

Evidence last updated: 2026-08-08 18:16:55.350Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Related packages

More from @rubytech

Behavioral surface

Related packages

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Source & flagged code