@factory/cli@0.205.1
Factory Droid CLI - AI-powered software engineering agent
AI Security Review
scanned 2mo ago · by lpm-firewall-aiThis is not concrete malicious behavior: the download is limited to the package's own platform dependencies and no exfiltration or foreign configuration mutation is present. It warrants a warning because an automatic fallback fetch installs and executes a native binary without source-level integrity verification.
Static reason
One or more suspicious static signals were detected.
Trigger
npm postinstall when the selected optional platform package is unavailable.
Impact
A compromised registry response or tarball source could lead to code execution during installation.
Mechanism
Downloads, extracts, links, and executes a platform binary.
AI rationale
This is not concrete malicious behavior: the download is limited to the package's own platform dependencies and no exfiltration or foreign configuration mutation is present. It warrants a warning because an automatic fallback fetch installs and executes a native binary without source-level integrity verification.
Evidence
package.jsoninstall.jsplatform.jsbin/droidbin/droid.backup
Network endpoints1
registry.npmjs.org/
Decision evidence
public snapshotAI called this Suspicious at 86.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The postinstall hook runs install.js automatically.
- If its optional native dependency is absent, the installer downloads the selected platform package from the npm registry.
- The downloaded archive is extracted into bin/droid and its executable is then run for a version check.
- The fallback download does not verify an integrity value before installing and executing the native binary.
Evidence against
- The download targets the package's own platform-specific @factory/cli dependencies from the npm registry.
- The NPM_TOKEN header is added only for npmjs.org requests.
- Filesystem changes are confined to this package's bin/droid shim and backup.
- No source evidence shows credential exfiltration, foreign agent configuration writes, or destructive behavior.
Behavioral surface
ChildProcessEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
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@0.205.1.
See all versions of @factory/cli for other recorded verdicts.
- Review the evidence and your use of @factory/cli@0.205.1 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.