Which versions of @zyrennofficiall/baileys are malicious?

The following npm versions of @zyrennofficiall/baileys are flagged malicious: 5.1.0, 5.2.0, 5.3.0, 5.4.0, 5.5.0. Treat any of these as compromised.

How do I remediate @zyrennofficiall/baileys if I installed it?

Remove @zyrennofficiall/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.

I already installed @zyrennofficiall/baileys — how do I know if it already compromised me?

If @zyrennofficiall/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.

How do I find @zyrennofficiall/baileys across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for @zyrennofficiall/baileys (5 malicious versions).

Malicious package

@zyrennofficiall/baileysnpm

Advisory published Oct 26, 2026Updated Nov 5, 2026

@zyrennofficiall/baileys is a confirmed malicious npm package (MAL-2026-18684) that executes malicious code on install (malicious versions 5.1.0, 5.2.0, 5.3.0…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @zyrennofficiall/baileys (npm)

MAL-2026-18684

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall @zyrennofficiall/baileys

What this malware does

@zyrennofficiall/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. A timer started when the socket connects, in lib/Socket/newsletter.js, sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363408893555851@newsletter, 120363426470081124@newsletter, 120363427718144294@newsletter (stored base64-encoded), using the victim's authenticated session and without telling them. This is separate from the update-channel follow the package announces in lib/Socket/index.js. Same behaviour as the PhantomSub family (MAL-2026-17342).

Malicious versions

5 flagged

5.1.05.2.05.3.05.4.05.5.0

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for @zyrennofficiall/baileys (5 malicious versions).
If you installed it — respond
Remove @zyrennofficiall/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.
Did it already run?
If @zyrennofficiall/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. @zyrennofficiall/baileys on npm has been identified as a malicious package (versions 5.1.0, 5.2.0, 5.3.0, 5.4.0, 5.5.0 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 @zyrennofficiall/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.

Malware detection Runtime egress monitoring

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