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Malicious package

colossal_wallaby_pink-87npm

Advisory published Updated

colossal_wallaby_pink-87 is a confirmed malicious npm package (MAL-2026-18606) that executes malicious code on install (malicious version 1.2.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in colossal_wallaby_pink-87 (npm)

MAL-2026-18606
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall colossal_wallaby_pink-87

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: 1.2.1; tarball SHA-256 eefa5998b053240ecd251b218193b2352c7dc55759fcaaeeb814f3c5fccf9539.

Malicious versions

1 flagged
1.2.1

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for colossal_wallaby_pink-87 (version 1.2.1).

  2. If you installed it — respond

    Remove colossal_wallaby_pink-87 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.

  3. Did it already run?

    If colossal_wallaby_pink-87 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

No. colossal_wallaby_pink-87 on npm has been identified as a malicious package (version 1.2.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

  • Oluwatosin Amokeodo · finder

Detect & block this

O3 blocks colossal_wallaby_pink-87-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.

Explore

colossal_wallaby_pink-87 (npm) malicious package — MAL-2026-18606 | O3 Security