gm-plugkit@2.0.2471
Bootstrap and daemon-spawn tool for gm plugkit binary. Downloads the correct platform wasm, verifies SHA256, and launches agentplug-runner (the native wasm host) as the spool watcher daemon.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiNo lifecycle hook or import-time execution establishes an unconsented install-time attack. Explicit invocation nevertheless mutates AI-agent control surfaces and accepts unpinned remote instruction content, so it warrants a warning.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
User runs the gm-plugkit CLI or calls ensureReady().
Impact
Can alter future AI-agent behavior in the current project and user-level agent skill directories; remote skill updates are unpinned.
Mechanism
Remote skill provisioning, agent-config mutation, and verified binary bootstrap.
AI rationale
No lifecycle hook or import-time execution establishes an unconsented install-time attack. Explicit invocation nevertheless mutates AI-agent control surfaces and accepts unpinned remote instruction content, so it warrants a warning.
Evidence
package.jsoncli.jsbootstrap.jsbootstrap-shared.jsindex.js.gm/next-step.md.gm/instructions/CLAUDE.mdAGENTS.md~/.agents/skills/<skill>/SKILL.md~/.claude/skills/<skill>/SKILL.md~/.gm-tools/agentplug-runner.gm/exec-spool/
Network endpoints3
api.github.com/repos/AnEntrypoint/gm/contents/skills?ref=mainraw.githubusercontent.com/AnEntrypoint/gm/main/skills/<skill>/SKILL.mdgithub.com/AnEntrypoint/agentplug-bin/releases/download/<tag>/<asset>
Decision evidence
public snapshotAI called this Suspicious at 95.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- bootstrap.js ensureReady writes project AI instruction wiring on every CLI bootstrap.
- bootstrap-shared.js modifies CLAUDE.md and AGENTS.md, adding @.gm/next-step.md.
- bootstrap.js downloads unpinned main-branch skill content and writes it to ~/.agents/skills and ~/.claude/skills.
- cli.js downloads and launches a detached agentplug-runner daemon.
Evidence against
- package.json has no preinstall, install, or postinstall lifecycle hook.
- index.js only exports APIs; source does not run on import.
- Downloaded wasm/runner artifacts have SHA-256 checks before execution.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStringsUrlStrings
Source & flagged code
4 flagged · loading sourcebootstrap-shared.jsView file
5const os = require('os');
L6: const { spawnSync } = require('child_process');
L7: const { pidAlive, sha256OfFileSync } = require('./gm-process');
High
Child Process
Package source references child process execution.
bootstrap-shared.jsView on unpkg · L5bootstrap.jsView file
7const crypto = require('crypto');
L8: const { spawn, spawnSync } = require('child_process');
L9: const { sha256OfFile, sha256OfFileSync } = require('./gm-process');
...
L37:
L38: const wrapperDir = __dirname;
L39:
...
L44: try {
L45: const ownPkg = JSON.parse(fs.readFileSync(path.join(__dirname, 'package.json'), 'utf-8'));
L46: if (ownPkg && ownPkg.version) {
...
L167: const dir = gmToolsDir();
L168: const names = process.platform === 'win32'
L169: ? ['agentplug-runner.exe']
Critical
Download Execute
Source downloads or fetches remote code and executes it.
bootstrap.jsView on unpkg · L77Trigger-reachable chain: manifest.main -> index.js -> bootstrap.js
L7: const crypto = require('crypto');
L8: const { spawn, spawnSync } = require('child_process');
L9: const { sha256OfFile, sha256OfFileSync } = require('./gm-process');
...
L37:
L38: const wrapperDir = __dirname;
L39:
...
L44: try {
L45: const ownPkg = JSON.parse(fs.readFileSync(path.join(__dirname, 'package.json'), 'utf-8'));
L46: if (ownPkg && ownPkg.version) {
...
L167: const dir = gmToolsDir();
L168: const names = process.platform === 'win32'
L169: ? ['agentplug-runner.exe']
Findings
3 Critical1 High3 Medium3 Low
CriticalDownload Executebootstrap.js
CriticalTrigger Reachable Dangerous Capabilitybootstrap.js
CriticalPrevious Version Dangerous Deltabootstrap.js
HighChild Processbootstrap-shared.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to gm-plugkit@2.0.2471.
See all versions of gm-plugkit for other recorded verdicts.
- Review the evidence and your use of gm-plugkit@2.0.2471 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: .
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