Which versions of baileys-web3 are malicious?

The following npm versions of baileys-web3 are flagged malicious: 0.1.0, 0.1.1, 0.1.2, 0.1.3. Treat any of these as compromised.

How do I remediate baileys-web3 if I installed it?

Remove baileys-web3 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 baileys-web3 — how do I know if it already compromised me?

If baileys-web3 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 baileys-web3 across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for baileys-web3 (4 malicious versions).

Malicious package

baileys-web3npm

Advisory published Oct 27, 2026Updated Nov 9, 2026

baileys-web3 is a confirmed malicious npm package (MAL-2026-18945) that executes malicious code on install (malicious versions 0.1.0, 0.1.1, 0.1.2…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in baileys-web3 (npm)

MAL-2026-18945

Immediate action

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

npm uninstall baileys-web3

What this malware does

baileys-web3 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) 120363405637529316@newsletter, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

Malicious versions

4 flagged

0.1.00.1.10.1.20.1.3

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for baileys-web3 (4 malicious versions).
If you installed it — respond
Remove baileys-web3 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 baileys-web3 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. baileys-web3 on npm has been identified as a malicious package (versions 0.1.0, 0.1.1, 0.1.2, 0.1.3 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 baileys-web3-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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