droid@0.238.0
Factory Droid CLI - AI-powered software engineering agent
AI Security Review
scanned 25d ago · by lpm-firewall-aiThe installer exposes NPM_TOKEN to a redirect destination selected through registry metadata when that destination's hostname contains npmjs.org. This is a conditional credential-forwarding risk, while the remaining install behavior is consistent with setting up the package's own CLI binary.
Static reason
One or more suspicious static signals were detected.
Trigger
Package installation with lifecycle scripts enabled, missing optional platform dependency, and NPM_TOKEN set.
Impact
A crafted redirect destination could receive the npm token, subject to the stated conditions.
Mechanism
The installer reads the tarball URL from npm registry metadata, follows redirects, and adds the token based on a substring hostname check at each request.
AI rationale
The installer exposes NPM_TOKEN to a redirect destination selected through registry metadata when that destination's hostname contains npmjs.org. This is a conditional credential-forwarding risk, while the remaining install behavior is consistent with setting up the package's own CLI binary.
Evidence
package.jsoninstall.jsbin/droid
Network endpoints1
registry.npmjs.org
Decision evidence
public snapshotAI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- package.json runs install.js automatically during postinstall and declares matching platform packages.
- install.js attaches NPM_TOKEN to requests when the hostname merely contains npmjs.org.
- Registry metadata supplies the tarball URL, and redirects are followed recursively without constraining the destination.
- The fallback download and shim replacement are limited to the package's platform binary and bin/droid.
Evidence against
- The postinstall is consistent with installing and optimizing this CLI's matching platform binary.
- The observed risk depends on NPM_TOKEN being set and a registry response redirecting to a hostname that passes the substring check.
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@0.238.0.
See all versions of droid for other recorded verdicts.
- Review the evidence and your use of droid@0.238.0 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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