smooth_angelfish_emerald-54npm
Advisory published Updated
smooth_angelfish_emerald-54 is a confirmed malicious npm package (MAL-2026-18616) that executes malicious code on install (malicious version 2.2.2). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in smooth_angelfish_emerald-54 (npm)
What this malware does
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.
Malicious versions
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for smooth_angelfish_emerald-54 (version 2.2.2).
If you installed it — respond
Remove smooth_angelfish_emerald-54 from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If smooth_angelfish_emerald-54 was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Credits
- Oluwatosin Amokeodo · finder
Detect & block this
O3 blocks smooth_angelfish_emerald-54-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.