npm · Malicious package advisory
Malware@alannxds/baileys
MAL-2026-18669
Malicious code in @alannxds/baileys (npm)
Details
@alannxds/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) 120363371199176376@newsletter, 120363387182851100@newsletter, 120363421367985094@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)
- 6.2.10
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.