MAL-2026-2882 Malicious code in cjs-biginteger (npm)

Malicious package Published
Package
cjs-biginteger
Registry
npm

What is MAL-2026-2882?

MAL-2026-2882 is a malicious package in cjs-biginteger, published on 14 Apr 2026.

Official description

big.js typosquat campaign - SSH backdoor implantation, credential and crypto wallet theft

The package cjs-biginteger 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.

What should I do about MAL-2026-2882?

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

Sources

Also known as GHSA-65gr-98mv-9rj5.

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