MAL-2026-16295 Malicious code in tailwindcss-forms-ui (npm)
Malicious package
Published
MAL-2026-16295 is a malicious package: tailwindcss-forms-ui (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-2026-16295/ (Markdown: https://insights.sbomify.com/MAL-2026-16295/index.md)
- Package
- tailwindcss-forms-ui
- Registry
- npm
What is MAL-2026-16295?
MAL-2026-16295 is a malicious package in tailwindcss-forms-ui, published on 18 Sep 2026.
Official description
The package name typosquats @tailwindcss/forms but its main entry src/index.js is a 39 KB obfuscator.io bundle (303-entry rotating string array, hex-named identifiers, control-flow flattening) with no Tailwind/CSS functionality. On require(), the module attaches require and module to global scope, then queries Ethereum JSON-RPC endpoints (eth.publicnode.com, 1rpc.io/eth, eth-mainnet.public.blastapi.io, eth.drpc.org) and Etherscan/Blockscout txlist APIs for transactions from the hardcoded sender address 0xa322E5f39aDC2490EfD311D3080e6f0121063e1a, decompresses the returned transaction data (gzip/deflate/brotli), and passes it to code-construction and node:child_process.spawn sinks. The hardcoded sender's on-chain transactions are a mutable, attacker-controlled payload channel (EtherHiding pattern), granting arbitrary code execution on any installer that require()s the module.
What should I do about MAL-2026-16295?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.