MAL-2026-17562 Malicious code in internallib_v923 (npm)
Malicious package
Published
MAL-2026-17562 is a malicious package: internallib_v923 (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-2026-17562/ (Markdown: https://insights.sbomify.com/MAL-2026-17562/index.md)
- Package
- internallib_v923
- Registry
- npm
What is MAL-2026-17562?
MAL-2026-17562 is a malicious package in internallib_v923, published on 5 Oct 2026.
Official description
index.js exports a command() function that shells out via /bin/bash -c to curl a payload from reverse-shell.sh and pipe it to sh, yielding a reverse shell to the hardcoded callback host 10.0.72.151:443. Any consumer requiring the package and invoking the exported API triggers remote-fetched shell execution with full-host control by the operator of the hardcoded callback. The manifest also declares a single dependency internallib_v79 and the sibling check.js invokes require('internallib_v79').command(), indicating the same payload shape is distributed across a package family with dependency-confusion-style naming (internallib_v<n>).
What should I do about MAL-2026-17562?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.