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Malicious package

xenacious_kangaroo_blush-47npm

Advisory published Updated

xenacious_kangaroo_blush-47 is a confirmed malicious npm package (MAL-2026-18623) that executes malicious code on install (malicious version 4.3.3). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in xenacious_kangaroo_blush-47 (npm)

MAL-2026-18623
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall xenacious_kangaroo_blush-47

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: 4.3.3; tarball SHA-256 d3d633c35cdfcf07a34516e2f1d6a1761c15d4e5b0769b0fb55117520cc90225.

Malicious versions

1 flagged
4.3.3

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for xenacious_kangaroo_blush-47 (version 4.3.3).

  2. If you installed it — respond

    Remove xenacious_kangaroo_blush-47 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 xenacious_kangaroo_blush-47 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. xenacious_kangaroo_blush-47 on npm has been identified as a malicious package (version 4.3.3 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 xenacious_kangaroo_blush-47-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

xenacious_kangaroo_blush-47 (npm) malicious package — MAL-2026-18623 | O3 Security