MAL-2026-10594 Malicious code in yargsplus (npm)
Malicious package
Published
MAL-2026-10594 is a malicious package: yargsplus (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-2026-10594/ (Markdown: https://insights.sbomify.com/MAL-2026-10594/index.md)
- Package
- yargsplus
- Registry
- npm
What is MAL-2026-10594?
MAL-2026-10594 is a malicious package in yargsplus, published on 14 Jul 2026.
Official description
The package declares a postinstall hook (
node.init.js) that runs automatically on npm install. The script enumerates roughly 60 credential and CI environment variables (including NPM_TOKEN, GITHUB_TOKEN, AWS_SECRET_ACCESS_KEY, GCP/Azure/Heroku/Vercel/Stripe tokens, DB_PASSWORD), reads home-directory dotfiles such as ~/.npmrc, ~/.env*, and credentials.json, and walks ~/.config for files matching token/cred/secret patterns. It also collects host reconnaissance (hostname, platform, cwd, pid, timestamp) and POSTs the combined JSON to a hardcoded external webhook at webhook.cool. The package ships no legitimate functionality; its main entry is empty. The name resembles the popular yargs CLI parser, consistent with a typosquat lure.What should I do about MAL-2026-10594?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.