Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
Malicious package

tailwind-forms-stylesnpm

Advisory published Updated

tailwind-forms-styles is a confirmed malicious npm package (MAL-2026-16195) that opens a backdoor for remote access (malicious versions 0.5.1, 0.5.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in tailwind-forms-styles (npm)

MAL-2026-16195
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall tailwind-forms-styles

What this malware does

tailwind-forms-styles ships a src/index.js that is fully obfuscated with obfuscator.io (rotated 303-entry string array, hex-named identifiers, control-flow flattening) and bears no relation to the Tailwind forms plugin advertised in the README and src/index.d.ts. On require() the module opens HTTP(S)/zlib streams to Ethereum RPC endpoints (public.blockscout, *.drpc.org, *.publicnode.com) and an etherscan-like transaction indexer, queries transactions for the hardcoded address 0xa322E5f3D311D3080e9aDC2490Ef6f0121063e1a, imports node:child_process spawn, and injects reconstructed strings into the Node global object (_t_u, _t_s, _H, _H2, _r=require, _m=module, _global=global). This is an EtherHiding-style loader that pulls executable payload data from attacker-controlled on-chain storage and hands it to child_process/global-eval sinks, producing arbitrary code execution on the machine that requires the package (e.g. from tailwind.config.js during a build). The package name and the package.json repository field pointing at tailwindlabs/tailwindcss-forms are impersonation of the real @tailwindcss/forms plugin to induce installation.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

2 flagged
0.5.10.5.2

Indicators of compromise (SHA-256)

92f06c2ce29f04ce06cfb494996cb6ffde7aea02af92489abcacf10cbcb7beb2
3394e75d27307e27ab0fed8e037bc3f0c8b3b1e4bd7808c78f3f9c88212383fc
aa5585b07407054c6f61cad6ee8450c81e161ab7122cbe0a3bf0ec4277b8087c

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for tailwind-forms-styles (2 malicious versions).

  2. If you installed it — respond

    tailwind-forms-styles establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

  3. Did it already run?

    If tailwind-forms-styles was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. tailwind-forms-styles on npm has been identified as a malicious package (versions 0.5.1, 0.5.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-020060GHSA-q8wp-7xrg-83rxIN-MAL-2026-020355

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks tailwind-forms-styles-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Explore

tailwind-forms-styles (npm) malicious package — MAL-2026-16195 | O3 Security