npm · Malicious package advisory
Malware@dyllxnn/baileys
MAL-2026-18676
Malicious code in @dyllxnn/baileys (npm)
Details
@dyllxnn/baileys 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 the channel ID(s) 120363408893555851@newsletter, 120363412076734264@newsletter (stored base64-encoded), using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).
Compromised versions (1)
- 1.0.0
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.