MAL-2026-4665 Malicious code in security-env-loader (npm)
- Package
- security-env-loader
- Registry
- npm
What is MAL-2026-4665?
MAL-2026-4665 is a malicious package in security-env-loader, published on 20 May 2026.
Official description
Package impersonates the popular dotenv library (identical description and repo URL git://github.com/motdotla/dotenv.git) and exposes a matching config() API. When a consumer calls require('security-env-loader').config(…), lib/main.js loads lib/sync-safe-read.js — an obfuscator.io-packed module (rotated string array, _0x-style hex identifiers) that runs at top level. The module collects os.hostname(), os.type()/release()/arch(), MAC addresses from os.networkInterfaces(), and the entire process.env via JSON.stringify(process.env), then POSTs/GETs the data as query parameters to a base64-decoded URL (https://ip-core-api-0511.vercel.app/api; the same value is shipped in the package's.env as AUTH_API=aHR0cHM6Ly9pcC1jb3JlLWFwaS0wNTExLnZlcmNlbC5hcHAvYXBp). The exfiltration loop fires every 5 seconds via setInterval. The response from the C2 is parsed and when status==='log', message is passed to eval(), giving the operator persistent arbitrary-code execution in any host process that imports this package. Because the package's stated purpose is to load environment variables, the exfiltrated process.env is highly likely to contain live API keys, database credentials, and cloud tokens.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
What should I do about MAL-2026-4665?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.
Sources
Also known as GHSA-rv4w-rvp6-p6rg.