@factory/cli@0.203.0
Factory Droid CLI - AI-powered software engineering agent
AI Security Review
scanned 2mo ago · by lpm-firewall-aiNo direct malicious behavior or unrelated exfiltration was found, but the postinstall fallback downloads and executes an unverified native payload. This is a material supply-chain execution risk that warrants warning rather than a block.
Static reason
One or more suspicious static signals were detected.
Trigger
npm postinstall when the platform optional dependency is absent
Impact
A compromised registry response or dependency artifact could run native code during installation.
Mechanism
remote platform-binary download, local write, and execution
AI rationale
No direct malicious behavior or unrelated exfiltration was found, but the postinstall fallback downloads and executes an unverified native payload. This is a material supply-chain execution risk that warrants warning rather than a block.
Evidence
package.jsoninstall.jsplatform.jsbin/droidREADME.md
Network endpoints1
registry.npmjs.org/
Decision evidence
public snapshotAI called this Suspicious at 89.0% confidence as Unknown with medium false-positive risk.
Evidence for warning
- postinstall runs install.js.
- Fallback fetches a platform tarball from npm and writes its executable payload.
- Fetched binary is executed during postinstall for version validation.
- No checksum or signature verification is applied to the fetched archive.
Evidence against
- Network destination is the npm registry and selected package names are declared optional dependencies.
- Filesystem mutation is limited to this package's bin/droid shim and binary.
- NPM_TOKEN is only attached when the host contains npmjs.org; no unrelated exfiltration found.
- No AI-agent config writes, credential harvesting, destructive actions, eval, or persistence found.
Behavioral surface
ChildProcessEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
NoLicense
Source & flagged code
6 flaggedpackage.jsonView file
•scripts.postinstall = node install.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg9scripts.postinstall = node install.js
Install-time code downloads an unverified remote native executable, stages it locally, activates an executable path, and exposes it to process execution.
L9: *
L10: * Based on esbuild's approach: https://github.com/evanw/esbuild/pull/1621
L11: * and Sentry's guide: https://sentry.engineering/blog/publishing-binaries-on-npm
L12: *
...
L19: const path = require('path');
L20: const https = require('https');
L21: const zlib = require('zlib');
...
L27: getBinaryName,
L28: getBinaryPath,
L29: detectAVX2Support,
...
L50:
L51: function validateBinaryVersion(binaryPath) {
High
Unverified Remote Native Payload Install
Install-time source downloads a native archive from a fixed external host without transport verification, extracts it, and installs an executable payload.
package.jsonView on unpkg · L9•scripts.postinstall = node install.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
Findings
5 High4 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighChild Processinstall.js
HighShellinstall.js
HighSame File Env Network Executioninstall.js#virtual:normalized:round1
HighUnverified Remote Native Payload Installpackage.json
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowNo License
Affected versions and remediation
This report applies to @factory/cli@0.203.0.
See all versions of @factory/cli for other recorded verdicts.
- Review the evidence and your use of @factory/cli@0.203.0 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.