MAL-2025-42158 Malicious code in yui2-treeview (npm)

Malicious package Published
Package
yui2-treeview
Registry
npm

What is MAL-2025-42158?

MAL-2025-42158 is a malicious package in yui2-treeview, published on 5 Sep 2025.

Official description

The package yui2-treeview 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-2025-42158?

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

Sources

Also known as GHSA-fpvp-rgh3-c46r, SNYK-JS-YUI2TREEVIEW-12508461.

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