Loading npm security reports…

u-foo@3.0.16: AI-agent control-surface risk | LPM Firewall

registry / u-foo / 3.0.16

u-foo@3.0.16

Multi-Agent Workspace Protocol. Just add u. claude → uclaude, codex → ucodex.

AI Security Review

scanned 18d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. npm postinstall mutates Claude and Codex global skill directories without an opt-in. The installed skills direct agents to execute injected bus work and advertise remote collaboration.

Static reason

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

Trigger

npm install

Impact

Subsequent Claude/Codex sessions can load package-controlled instructions that accept and execute bus-delivered tasks.

Mechanism

global AI-agent skill symlink installation with instruction injection

Policy narrative

Installing the package runs a postinstall hook that creates or replaces global Claude and Codex skill links without user consent. Those skills instruct an agent to execute received ufoo bus tasks immediately, while another installed skill advertises remote collaboration. This creates an install-time, cross-agent prompt/control surface rather than merely configuring the package's own CLI.

Rationale

Direct source inspection confirms unconsented postinstall mutation of foreign, broad AI-agent skill locations and package-controlled instructions that act on injected work. This meets the install-time AI-agent control-hijack block boundary.

Evidence

package.jsonscripts/postinstall.jsscripts/postinstall-skills.jsSKILLS/ufoo/SKILL.mdSKILLS/ufoo-online/SKILL.mdSKILLS/ufoo/agents/openai.yamlSKILLS/ufoo-online/agents/openai.yaml~/.claude/skills/*${CODEX_HOME:-~/.codex}/skills/*

Source & flagged code

14 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

bin/ufoo.jsView file

80L81: const { execSync } = require("child_process"); L82: const path = require("path");

High

Child Process

Package source references child process execution.

bin/ufoo.jsView on unpkg · L80

bin/ukimi.jsView file

13L14: const AgentLauncher = require("../src/agents/launch/launcher"); L15: const { resolveDefaultManualBootstrap } = require("../[redacted]");

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/ukimi.jsView on unpkg · L13

src/runtime/projects/projectId.jsView file

1const crypto = require("crypto"); L2: const fs = require("fs");

Low

Weak Crypto

Package source references weak cryptographic algorithms.

src/runtime/projects/projectId.jsView on unpkg · L1

src/coordination/bus/inject.jsView file

1const { spawn, spawnSync } = require("child_process"); L2: const fs = require("fs"); L3: const net = require("net"); L4: const path = require("path"); ... L7: L8: const SHOULD_LOG_INJECT = process.env.UFOO_INJECT_DEBUG === "1"; L9: const logInject = (message) => {

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

src/coordination/bus/inject.jsView on unpkg · L1

•matchType = normalized_sha256 matchedPackage = u-foo@3.0.13 matchedPath = src/coordination/bus/inject.js matchedIdentity = npm:dS1mb28:3.0.13 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.

src/coordination/bus/inject.jsView on unpkg

src/agents/launch/ptyRunner.jsView file

215package = u-foo; repositoryIdentity = ufoo; dependency = @xterm/addon-serialize L215: const xterm = await import("@xterm/headless"); L216: const serialize = await import("@xterm/addon-serialize"); L217: Terminal = xterm.Terminal

High

Copied Package Dependency Bridge

Package metadata claims a different repository identity while copied source loads a runtime dependency bridge.

src/agents/launch/ptyRunner.jsView on unpkg · L215

scripts/postinstall.jsView file

1Install-time AI-agent control hijack evidence: L74: function installSkillDirs(targetDir, sources, label) { L75: fs.mkdirSync(targetDir, { recursive: true }); L76: ... L84: // Install ufoo skills for Claude and Codex at npm install time. L85: // - Claude skills: ~/.claude/skills/<name> -> skill dir L86: // - Codex skills: ${CODEX_HOME:-~/.codex}/skills/<name> -> skill dir L87: try { ... L90: const sources = collectSkillSources(pkgRoot); L91: const codexHome = process.env.CODEX_HOME || path.join(home, ".codex"); L92: const retiredLinks = [redacted]({ pkgRoot, home, codexHome }); ... L98: if (sources.length > 0) { L99: installSkillDirs(path.join(home, ".claude", "skills"), sources, "~/.claude/skills"); Payload evidence from SKILLS/ufoo/SKILL.md: L1: --- L2: name: ufoo

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/postinstall.jsView on unpkg · L1

dist/tui/linux-arm64/ufoo-tuiView file

•path = dist/tui/linux-arm64/ufoo-tui kind = native_binary sizeBytes = 2116584 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

dist/tui/linux-arm64/ufoo-tuiView on unpkg

src/runtime/daemon/mcpServer.jsView file

•matchType = normalized_sha256 matchedPackage = u-foo@3.0.13 matchedPath = src/runtime/daemon/mcpServer.js matchedIdentity = npm:dS1mb28:3.0.13 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.

src/runtime/daemon/mcpServer.jsView on unpkg

src/agents/launch/launcher.jsView file

•matchType = normalized_sha256 matchedPackage = u-foo@3.0.13 matchedPath = src/agents/launch/launcher.js matchedIdentity = npm:dS1mb28:3.0.13 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.

src/agents/launch/launcher.jsView on unpkg

src/app/chat/transport.jsView file

•matchType = normalized_sha256 matchedPackage = u-foo@3.0.13 matchedPath = src/app/chat/transport.js matchedIdentity = npm:dS1mb28:3.0.13 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.

src/app/chat/transport.jsView on unpkg

src/app/cli/run.jsView file

•matchType = normalized_sha256 matchedPackage = u-foo@3.0.13 matchedPath = src/app/cli/run.js matchedIdentity = npm:dS1mb28:3.0.13 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.

src/app/cli/run.jsView on unpkg