registry / @spuentesp/lain-mcp / 0.11.0
@spuentesp/lain-mcp@0.11.0
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AI Security Review
scanned 1d ago · by lpm-firewall-aiThe postinstall download is package-aligned installer behavior: it uses versioned releases from the repository identified in the manifest, checks the archive checksum, and verifies the binary version. The inspected source showed no independent attack behavior.
Static reason
One or more suspicious static signals were detected.
Trigger
Package installation runs the postinstall hook; invoking the lain command also ensures the binary is present.
Impact
The downloaded project executable is cached and launched as the package’s intended command; no separate harmful behavior was established.
Mechanism
The installer fetches from the project’s GitHub releases, checks the archive checksum, extracts the binary, and verifies its reported version.
AI rationale
The postinstall download is package-aligned installer behavior: it uses versioned releases from the repository identified in the manifest, checks the archive checksum, and verifies the binary version. The inspected source showed no independent attack behavior.
Evidence
package.jsonscripts/install.jsscripts/runtime.jsbin/lain.js
Network endpoints1
github.com/spuentesp/lain/releases/download/
Decision evidence
public snapshotAI called this Clean at 92.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- The postinstall hook invokes the package’s binary installer, with skips for CI and disabled install scripts.
- The installer downloads versioned archives from the project’s GitHub releases and checks the archive checksum before extraction.
- The downloaded executable must report the requested Lain version before being cached.
Evidence against
- Installation downloads and runs a native executable, but the inspected source ties it to the project’s release repository and verifies its checksum and reported version.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStringsUrlStrings
Source & flagged code
5 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node scripts/install.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg2scripts.postinstall = node scripts/install.js
Install-time code downloads an unverified remote native executable, stages it locally, activates an executable path, and exposes it to process execution.
L4: const fs = require('fs');
L5: const https = require('https');
L6: const os = require('os');
L7: const path = require('path');
L8: const { execFileSync, spawnSync } = require('child_process');
L9:
...
L11:
L12: function targetFor(platform = process.platform, arch = process.arch) {
L13: const targets = { 'darwin-arm64': 'aarch64-apple-darwin', 'linux-x64': 'x86_64-unknown-linux-gnu', 'win32-x64': 'x86_64-pc-windows-msvc' };
L14: const target = targets[`${platform}-${arch}`];
L15: if (!target) throw new Error(`Unsupported platform: ${platform}-${arch}`);
L16: return target;
L2:
L3: const {
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 · L2•scripts.postinstall = node scripts/install.js
Findings
2 High4 Medium6 Low
HighInstall Time Lifecycle Scriptspackage.json
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
LowSuspicious Lifecycle Evidencepackage.json
LowSuspicious Lifecycle Evidencescripts/install.js
Affected versions and remediation
This report applies to @spuentesp/lain-mcp@0.11.0.
See all versions of @spuentesp/lain-mcp for other recorded verdicts.
- Review the evidence and your use of @spuentesp/lain-mcp@0.11.0 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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