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Malicious package

@zanxiky/baileysnpm

Advisory published Updated

@zanxiky/baileys is a confirmed malicious npm package (MAL-2026-19059) that executes malicious code on install (malicious versions 0.0.0-stage, 1.1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @zanxiky/baileys (npm)

MAL-2026-19059
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @zanxiky/baileys

What this malware does

Malicious package. @zanxiky/baileys is a trojanized fork of the Baileys WhatsApp library (@whiskeysockets/baileys). on connection it issues an authenticated w:mex newsletter FOLLOW mutation (query_id 7871414976211147) that silently subscribes every victim to attacker-controlled WhatsApp channels — hardcoded newsletter JIDs: 120363399602691477@newsletter, 120363421563597486@newsletter. Legitimate Baileys never hardcodes a channel JID or auto-follows on connect; all published versions are malicious. Detected by wormsign static analysis of the injected channel-subscription code.

Malicious versions

2 flagged
0.0.0-stage1.1.0

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for @zanxiky/baileys (2 malicious versions).

  2. If you installed it — respond

    Remove @zanxiky/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 @zanxiky/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. @zanxiky/baileys on npm has been identified as a malicious package (versions 0.0.0-stage, 1.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

References

Credits

  • wormsign · finder

Detect & block this

O3 blocks @zanxiky/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

@zanxiky/baileys (npm) malicious package — MAL-2026-19059 | O3 Security