davebaileysnpm
Advisory published Updated
davebaileys is a confirmed malicious npm package (MAL-2026-18960) that executes malicious code on install (malicious version 2.5.8). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in davebaileys (npm)
What this malware does
davebaileys is a fork of the Baileys WhatsApp Web library that silently subscribes the installer's own WhatsApp account to WhatsApp Channels chosen by the publisher. When the socket connects, code in lib/Socket/newsletter.js sends the WhatsApp w:mex FOLLOW query for a list downloaded at runtime from https://raw.githubusercontent.com/pesh-254/Davexpair/main/newsletter.json (the URL itself stored as base64 strings), using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).
Malicious versions
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for davebaileys (version 2.5.8).
If you installed it — respond
Remove davebaileys 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 davebaileys 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
References
Credits
- CyberXYZ · finder
Detect & block this
O3 blocks davebaileys-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.