npm · Malicious package advisory
Malwarewileys-neji
MAL-2026-19034
Malicious code in wileys-neji (npm)
Details
wileys-neji 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) 120363303656790201@newsletter, 120363404743164316@newsletter (stored as base64 strings), using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).
Compromised versions (1)
- 2.0.3
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.