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)
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
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for babyyodaa (version 1.1.0).
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.
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
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.