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Malicious package

@modzneverdie/baileysnpm

Advisory published Updated

@modzneverdie/baileys is a confirmed malicious npm package (MAL-2026-18865) that executes malicious code on install (malicious versions 17.1.1, 17.1.2, 17.1.3…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @modzneverdie/baileys (npm)

MAL-2026-18865
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @modzneverdie/baileys

What this malware does

@modzneverdie/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) 120363379975415016@newsletter, 120363419207885800@newsletter, 120363421726813851@newsletter, 120363423345930954@newsletter (stored as base64 strings), using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

Malicious versions

7 flagged
17.1.117.1.217.1.317.1.1717.1.1817.1.1917.1.20

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for @modzneverdie/baileys (7 malicious versions).

  2. If you installed it — respond

    Remove @modzneverdie/baileys from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If @modzneverdie/baileys was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. @modzneverdie/baileys on npm has been identified as a malicious package (versions 17.1.1, 17.1.2, 17.1.3, 17.1.17, 17.1.18, 17.1.19, 17.1.20 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

References

Credits

  • CyberXYZ · finder

Detect & block this

O3 blocks @modzneverdie/baileys-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

@modzneverdie/baileys (npm) malicious package — MAL-2026-18865 | O3 Security