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Malicious package

babyyodaanpm

Advisory published Updated

babyyodaa is a confirmed malicious npm package (MAL-2026-18605) that executes malicious code on install (malicious version 1.1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in babyyodaa (npm)

MAL-2026-18605
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall babyyodaa

What this malware does

Runs on install. The preinstall script marks a shell script bundled in the package as executable and runs it; the script contains a reverse-shell pattern, giving a remote party a shell on the installing machine. Version examined: 1.1.0; tarball SHA-256 8321ef8b36b40d9a5b5ba649e9ad4ec3bcbe18a9a484075c5e8e5e872ec0db0b.

Malicious versions

1 flagged
1.1.0

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for babyyodaa (version 1.1.0).

  2. If you installed it — respond

    Remove babyyodaa 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 babyyodaa 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. babyyodaa on npm has been identified as a malicious package (version 1.1.0 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 babyyodaa-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

babyyodaa (npm) malicious package — MAL-2026-18605 | O3 Security