MAL-2026-16332 Malicious code in feed-widget-helper (npm)

Malicious package Published
Package
feed-widget-helper
Registry
npm

What is MAL-2026-16332?

MAL-2026-16332 is a malicious package in feed-widget-helper, published on 21 Sep 2026.

Official description

On load, index.js schedules a setTimeout (~2s) that fetches the current origin's /profile endpoint, parses the returned HTML, extracts a.flag-value element (falling back to the entire page body), and issues a POST to /addPost with the extracted content as JSON. The behavior fires unconditionally without user interaction, uses the embedding page's authenticated session to read private profile data, and then publishes that data through a state-changing endpoint on the same origin. The package name ("feed-widget-helper") and package.json are placeholders: description, author, repository, and keywords are all empty, and the shipped code has no relation to any feed-widget functionality. The shape is a same-origin CSRF/exfiltration payload rather than a helper library.

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-2026-16332?

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

Sources

Also known as GHSA-r52r-vpcc-38v2.

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