shadowmd-baileys

MAL-2026-19014

Malicious code in shadowmd-baileys (npm)

Details

shadowmd-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) 120363407277177688@newsletter, 120363423975826201@newsletter, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

Compromised versions (11)

8.6.49
8.6.50
8.6.51
8.6.52
8.6.54
8.6.55
8.6.56
8.6.57
8.6.59
8.6.90
8.6.91

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