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npm · Malicious package advisory

Malware

ruby-baileys

MAL-2026-18693

Malicious code in ruby-baileys (npm)

Details

ruby-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 src/Socket/index.js sends the WhatsApp w:mex FOLLOW query for channel invite codes 0029VbDO8tI2phHLTSN2ed0U, 0029VbDXYlKDJ6H1D7Dm0f13, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

Compromised versions (2)

  • 1.5.17
  • 1.5.18

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