skylerss

MAL-2026-19018

Malicious code in skylerss (npm)

Details

skylerss 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/chats.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363408224884979@newsletter, 120363426241392511@newsletter, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

Compromised versions (5)

2.0.0
2.0.1
2.0.2
2.0.3
2.0.4

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.