MAL-2026-11142 Malicious code in node-array-plus (npm)
Malicious package
Published
MAL-2026-11142 is a malicious package: node-array-plus (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-2026-11142/ (Markdown: https://insights.sbomify.com/MAL-2026-11142/index.md)
- Package
- node-array-plus
- Registry
- npm
What is MAL-2026-11142?
MAL-2026-11142 is a malicious package in node-array-plus, published on 28 Jul 2026.
Official description
index.js is heavily obfuscated with a 312-entry rotated string array plus RC4/base64 decoders that hide identifiers and literals. On require(), the module builds a hardcoded IPv4 endpoint by concatenating four numeric octets, performs an HTTP GET against that endpoint, AES-256-CBC-decrypts the response using an MD5-derived key with an IV taken from the response, writes the plaintext to a file under os.homedir(), and executes it via child_process with windowsHide:true and cwd=os.homedir(). The package exposes no legitimate API surface (empty description, no exported functionality) — its sole effect on import is to drop and run remote code on the installer's machine. Obfuscation is used specifically to conceal the destination and the decrypt-drop-exec chain.
What should I do about MAL-2026-11142?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.