zero-baileysnpm
zero-baileys is a confirmed malicious npm package (MAL-2026-16280) that executes malicious code on install (malicious version 2.7.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in zero-baileys (npm)
What this malware does
package.json redirects the libsignal dependency to npm:@otaxayun/libsignal-node@latest. The @latest dist-tag is mutable and unpinned, so each npm install of zero-baileys resolves whatever tarball the @otaxayun scope currently publishes and executes any lifecycle scripts (preinstall/install/postinstall) it contains. Upstream Baileys resolves libsignal from a pinned source; the alias here substitutes an unofficial third-party scope as the trust root for a core cryptographic dependency, with no version pin and no integrity check. The static match on child_process + https.request + POST in lib/Utils/messages-media.js:28 corresponds to media-download helpers in the runtime library and is not itself an install-time exfil path.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for zero-baileys (version 2.7.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging zero-baileys across your stack and pipelines.
If you installed it — respond
Remove zero-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 zero-baileys was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks zero-baileys before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks zero-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.