Which versions of @denzz221/baileys are malicious?

The following npm versions of @denzz221/baileys are flagged malicious: 2.0.0, 7.0.0, 8.0.5, 8.0.6, 8.0.8, 8.1.1, 8.1.2, 8.1.3, 8.1.5, 8.1.6, 8.1.7. Treat any of these as compromised.

How do I remediate @denzz221/baileys if I installed it?

Remove @denzz221/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 @denzz221/baileys — how do I know if it already compromised me?

If @denzz221/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 @denzz221/baileys across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for @denzz221/baileys (11 malicious versions).

Malicious package

@denzz221/baileysnpm

Advisory published Oct 26, 2026Updated Nov 5, 2026

@denzz221/baileys is a confirmed malicious npm package (MAL-2026-18675) that executes malicious code on install (malicious versions 2.0.0, 7.0.0, 8.0.5…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @denzz221/baileys (npm)

MAL-2026-18675

Immediate action

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

npm uninstall @denzz221/baileys

What this malware does

@denzz221/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) 120363431475943819@newsletter (stored base64-encoded), using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

Malicious versions

11 flagged

2.0.07.0.08.0.58.0.68.0.88.1.18.1.28.1.38.1.58.1.68.1.7

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for @denzz221/baileys (11 malicious versions).
If you installed it — respond
Remove @denzz221/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 @denzz221/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. @denzz221/baileys on npm has been identified as a malicious package (versions 2.0.0, 7.0.0, 8.0.5, 8.0.6, 8.0.8, 8.1.1, 8.1.2, 8.1.3, and 3 more 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 @denzz221/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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