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OpenAdvisories
Malicious MAL-2026-18845

@hanzzyy/baileys

npm package · versions 8.0.0, 8.0.1

Reported Oct 27, 2026 · Updated Nov 9, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

@hanzzyy/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://raw.githubusercontent.com/h4nzzy/Screaper/refs/heads/main/idChannel.json, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

Indicators of compromise

Shown defanged and not clickable. Search any indicator to find other packages using it.

Domains

URLs

  • hxxps://raw[.]githubusercontent[.]com/h4nzzy/Screaper/refs/heads/main/idChannel[.]json other packages →