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@androidand/specsync@0.10.1: AI-agent control-surface risk | LPM Firewall

registry / @androidand/specsync / 0.10.1

@androidand/specsync@0.10.1

Sync OpenSpec changes with work-tracker issues — standalone CLI

AI Security Review

scanned 4d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. npm postinstall silently creates/overwrites a specsync skill in multiple unrelated global AI-agent control surfaces. It also downloads, extracts, and installs a platform binary that the CLI executes.

Static reason

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

Trigger

npm installation (postinstall); later specsync CLI invocation

Impact

Changes behavior/context of several installed AI-agent tools and stages a remotely supplied executable for execution.

Mechanism

unconsented cross-agent skill injection plus remote binary installation

Policy narrative

Installing the package automatically writes its bundled skill into global directories for Claude, Codex, OpenCode, Copilot, and generic agents, creating directories when absent. This is a broad foreign AI-agent control-surface mutation without an explicit setup command. The same postinstall downloads a release archive, extracts a binary into bin/specsync, and the package CLI executes it later.

Rationale

Source confirms an unconsented postinstall mutation of multiple foreign/broad AI-agent control surfaces, which meets the blocking policy. The package-aligned skill content and checksum check do not remove that install-time behavior.

Evidence

package.jsonscripts/postinstall.jsscripts/installer.jsbin/cli.jsskills/specsync/SKILL.md~/.claude/skills/specsync/SKILL.md~/.codex/skills/specsync/SKILL.md

Source & flagged code

7 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

scripts/postinstall.jsView file

21// Install the specsync skill into every known global agent skill directory. L22: // Non-fatal: a missing ~/.claude or ~/.codex directory is normal. L23: function installSkill() { ... L27: const agentDirs = [ L28: path.join(os.homedir(), ".claude", "skills", "specsync"), L29: path.join(os.homedir(), ".codex", "skills", "specsync"), L30: path.join(os.homedir(), ".config", "opencode", "skills", "specsync"), L31: path.join(os.homedir(), ".copilot", "skills", "specsync"), L32: path.join(os.homedir(), ".agents", "skills", "specsync"), L33: ]; ... L37: try { L38: fs.mkdirSync(dir, { recursive: true });

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 · L21

•matchType = normalized_sha256 matchedPackage = @androidand/specsync@0.9.0 matchedPath = scripts/postinstall.js matchedIdentity = npm:QGFuZHJvaWRhbmQvc3BlY3N5bmM:0.9.0 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.

scripts/postinstall.jsView on unpkg

bin/cli.jsView file

•matchType = normalized_sha256 matchedPackage = @androidand/specsync@0.9.0 matchedPath = bin/cli.js matchedIdentity = npm:QGFuZHJvaWRhbmQvc3BlY3N5bmM:0.9.0 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.

bin/cli.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 5dc474ac932dff2d signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @androidand/specsync@0.9.0 matchedPath = bin/cli.js matchedIdentity = npm:QGFuZHJvaWRhbmQvc3BlY3N5bmM:0.9.0 similarity = 1.000 shingleOverlap = 3 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.

bin/cli.jsView on unpkg

scripts/installer.jsView file

•matchType = normalized_sha256 matchedPackage = @androidand/specsync@0.9.0 matchedPath = scripts/installer.js matchedIdentity = npm:QGFuZHJvaWRhbmQvc3BlY3N5bmM:0.9.0 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.

scripts/installer.jsView on unpkg

Source & flagged code

7 flagged

package.jsonView file

Lines 1-40json

1{

2 "name": "@androidand/specsync",

3 "version": "0.10.1",

4 "description": "Sync OpenSpec changes with work-tracker issues — standalone CLI",

5 "keywords": [

6 "openspec",

7 "github-issues",

8 "spec-driven",

9 "issue-tracker",

10 "sync",

11 "cli",

12 "planning"

13 ],

14 "author": "androidand",

15 "bugs": "https://github.com/androidand/specsync/issues",

16 "bin": {

17 "specsync": "bin/cli.js"

18 },

19 "scripts": {

20 "postinstall": "node scripts/postinstall.js",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L20

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L20

21 "test": "node --test test/*.test.js"

22 },

23 "files": [

24 "bin/",

25 "scripts/",

26 "skills/"

27 ],

28 "os": [

29 "darwin",

30 "linux"

31 ],

32 "cpu": [

33 "x64",

34 "arm64"

35 ],

36 "engines": {

37 "node": ">=16"

38 },

39 "license": "MIT",

40 "repository": {

scripts/postinstall.jsView file

Lines 1-41javascript

1#!/usr/bin/env node

2// Downloads the platform-matched specsync binary from GitHub Releases.

3// Asset names match .goreleaser.yaml: specsync_<os>_<arch>.tar.gz

4const fs = require("fs");

5const os = require("os"

bin/cli.jsView file

•matchType = normalized_sha256 matchedPackage = @androidand/specsync@0.9.0 matchedPath = bin/cli.js matchedIdentity = npm:QGFuZHJvaWRhbmQvc3BlY3N5bmM:0.9.0 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.

bin/cli.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 5dc474ac932dff2d signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @androidand/specsync@0.9.0 matchedPath = bin/cli.js matchedIdentity = npm:QGFuZHJvaWRhbmQvc3BlY3N5bmM:0.9.0 similarity = 1.000 shingleOverlap = 3 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.

bin/cli.jsView on unpkg

scripts/installer.jsView file

•matchType = normalized_sha256 matchedPackage = @androidand/specsync@0.9.0 matchedPath = scripts/installer.js matchedIdentity = npm:QGFuZHJvaWRhbmQvc3BlY3N5bmM:0.9.0 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.

scripts/installer.jsView on unpkg