MAL-2026-16279 Malicious code in xzvbailsx (npm)
Malicious package
Published
MAL-2026-16279 is a malicious package: xzvbailsx (npm). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2026-16279/ (Markdown: https://insights.sbomify.com/MAL-2026-16279/index.md)
- Package
- xzvbailsx
- Registry
- npm
What is MAL-2026-16279?
MAL-2026-16279 is a malicious package in xzvbailsx, published on 18 Sep 2026.
Official description
package.json declares the dependency
libsignal with source github:tenka-san/libsignal-node, an unpinned GitHub ref with no commit SHA, tag, or integrity hash. On npm install, npm fetches whatever HEAD of that repository currently points at and executes any lifecycle scripts (preinstall/install/postinstall) it contains on the installer's machine. The referenced GitHub account is a personal repository unrelated to the WhiskeySockets/Baileys upstream that this package forks. Provenance is further obscured by an identity mismatch: the package is published as xzvbailsx but README/examples describe it as @XzV-RxVz/xbails, and the repository field points to Telegram handles (t.me/JustRxVz, t.me/XzV_ExpzC) rather than a source repository.What should I do about MAL-2026-16279?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.