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npm · Malicious package advisory

Malware

silva-baileys

MAL-2026-19016

Malicious code in silva-baileys (npm)

Details

silva-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 a list downloaded at runtime from https://files.giftedtech.co.ke/file/chJids.json (the URL itself 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 (4)

  • 1.0.0
  • 1.0.1
  • 1.0.3
  • 1.0.4

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