droid@0.239.0
Factory Droid CLI - AI-powered software engineering agent
AI Security Review
scanned 23d ago · by lpm-firewall-aiThe package uses a postinstall fallback to retrieve its platform binary from npm, but its redirect handling can forward NPM_TOKEN based on a substring hostname check. This is a conditional credential exposure risk, not evidence of a confirmed malicious transfer.
Static reason
One or more suspicious static signals were detected.
Trigger
During postinstall, the platform binary is unavailable and a fallback npm request is redirected.
Impact
A matching redirect hostname could receive the npm token.
Mechanism
The request code follows the redirect and applies its NPM_TOKEN hostname check again, which only checks whether the hostname contains npmjs.org.
AI rationale
The package uses a postinstall fallback to retrieve its platform binary from npm, but its redirect handling can forward NPM_TOKEN based on a substring hostname check. This is a conditional credential exposure risk, not evidence of a confirmed malicious transfer.
Evidence
package.jsoninstall.js
Network endpoints1
registry.npmjs.org
Decision evidence
public snapshotAI called this Suspicious at 83.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The postinstall fallback sends NPM_TOKEN when the request hostname contains npmjs.org.
- Redirects are followed by calling the same request function again, which reapplies that token condition to the redirect hostname.
- The fallback runs only when the platform binary is unavailable.
Evidence against
- The manifest pins optional platform packages to version 0.239.0.
- The fallback starts by requesting package metadata from registry.npmjs.org and selects the platform package at the package version.
Behavioral surface
ChildProcessEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
NoLicense
Source & flagged code
7 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
6 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
HighSemantic Analysis Limitedinstall.js#virtual:normalized:round1
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Low
Affected versions and remediation
This report applies to droid@0.239.0.
See all versions of droid for other recorded verdicts.
- Review the evidence and your use of droid@0.239.0 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: .
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