MAL-2026-18616: Malicious code in smooth_angelfish_emerald-54 (npm)

Published Nov 2, 2026
·
Updated

Part of a self-republishing campaign: generated names of the form <adjective><animal><colour>-<number>, each package shipping the same autopublish.js, which runs npm publish --access public to publish the package again. Self-replicating publication is the propagation step of a registry worm and fills the registry with copies. Version examined: 2.2.2; tarball SHA-256 223ace08ab038a6ee47fd7d04a2f489d9d4817d4b147f164be1de264918235c1.

Affected Software

1 affected component
npm/smooth_angelfish_emerald-54=2.2.2

Event History

Nov 2, 2026
Advisory Published
via OSV·09:44 AM
Data Sourced
via OSV·09:44 AM
DescriptionAffected Software

Frequently Asked Questions

1

What action triggers the malicious behavior?

The examined package includes autopublish.js, which runs `npm publish --access public` to publish the package again. The provided data does not state when or how that script is invoked.

2

What is the practical impact if it executes?

It republishes the package publicly as part of a self-replicating registry-worm campaign. This propagation fills the npm registry with additional copies using generated package names.

3

How can I identify the examined artifact?

The examined version is 2.2.2, and its tarball SHA-256 is 223ace08ab038a6ee47fd7d04a2f489d9d4817d4b147f164be1de264918235c1.

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