droid@0.240.1
Factory Droid CLI - AI-powered software engineering agent
AI Security Review
scanned 22d ago · by lpm-firewall-aiThe fallback's hostname substring check and redirect handling can expose NPM_TOKEN to an unrelated matching hostname. The risk is conditional on fallback activation and a registry-provided URL or redirect, so it warrants a warning rather than a block.
Static reason
One or more suspicious static signals were detected.
Trigger
During postinstall, the platform binary is missing, NPM_TOKEN is set, and a registry-provided tarball URL or redirect resolves to a hostname containing npmjs.org.
Impact
A matching unrelated hostname could receive the npm token, potentially exposing the installer's registry access.
Mechanism
The installer attaches NPM_TOKEN as a bearer authorization header using a substring hostname check, then follows redirects through the same request helper.
AI rationale
The fallback's hostname substring check and redirect handling can expose NPM_TOKEN to an unrelated matching hostname. The risk is conditional on fallback activation and a registry-provided URL or redirect, so it warrants a warning rather than a block.
Evidence
package.jsoninstall.jsbin/droid
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 and declares matching-version platform binary packages.
- If a platform binary is missing, the installer fetches that package's tarball URL from npm registry metadata and follows redirects.
- When NPM_TOKEN is set, the request helper sends it to any hostname containing npmjs.org; redirected requests use the same helper.
- The fallback extracts the platform executable and installs it with the package's own command shim.
Evidence against
- The fallback is limited to a missing optional platform binary and selects a package from the declared platform mapping.
- The observed file replacement targets this package's bin/droid shim; source shows no broader file mutation.
Behavioral surface
ChildProcessEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
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@0.240.1.
See all versions of droid for other recorded verdicts.
- Review the evidence and your use of droid@0.240.1 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: .
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