MAL-2026-6239 Malicious code in atlasora-config (npm)

Malicious package Published
Package
atlasora-config
Registry
npm

What is MAL-2026-6239?

MAL-2026-6239 is a malicious package in atlasora-config, published on 20 Jun 2026.

Official description

The package declares a postinstall hook in package.json ("postinstall": "node install.js") that auto-executes install.js on every npm install. install.js imports https, fs, os, and child_process; collects host identity via os.hostname() and os.userInfo() (line 16, 18); reads filesystem state with fs.existsSync (lines 53, 62, 83); shells out via execSync (line 77); and POSTs the collected data over an https.request to a remote endpoint (lines 96, 104, 113). The combination of host/user identity collection, filesystem probing, command execution, and outbound HTTPS POST inside a postinstall script is the canonical install-time exfiltration shape. Installing the package causes the installer's machine identity and environment data to be transmitted to a remote endpoint without consent.

What should I do about MAL-2026-6239?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

Sources

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