MAL-2026-16056 Malicious code in tailwind-aspect-styles (npm)
Malicious package
Published
MAL-2026-16056 is a malicious package: tailwind-aspect-styles (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-2026-16056/ (Markdown: https://insights.sbomify.com/MAL-2026-16056/index.md)
- Package
- tailwind-aspect-styles
- Registry
- npm
What is MAL-2026-16056?
MAL-2026-16056 is a malicious package in tailwind-aspect-styles, published on 8 Sep 2026.
Official description
The package's main module (src/index.js) performs an https.get to http://23.27.245.100/index.js over plain HTTP, writes the response to./inout.js in the consumer's working directory, and immediately require()s the written file. The fetch is unpinned, unauthenticated, and served from a bare IP over cleartext, so the operator of that endpoint controls arbitrary JavaScript executed in the Node process that loads this package. The package presents itself as the Tailwind aspect-ratio plugin, with a package.json repository field pointing to tailwindlabs/tailwindcss-aspect-ratio, while the dropper is appended after the legitimate-looking plugin export.
What should I do about MAL-2026-16056?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.