MAL-2026-2306 Malicious code in plain-crypto-js (npm)

Malicious package Published
Package
plain-crypto-js
Registry
npm

What is MAL-2026-2306?

MAL-2026-2306 is a malicious package in plain-crypto-js, published on 31 Mar 2026.

Official description

The package plain-crypto-js was found to contain malicious code.

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.

The npm package "axios" was compromised and a malicious dependency was added called "plain-crypto-js". The malicious code appears to install a remote access trojan.

What should I do about MAL-2026-2306?

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

Sources

Also known as GHSA-2x9r-6wxq-hrr7.

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