Which versions of core-tailwindcss-utility are malicious?

The following npm versions of core-tailwindcss-utility are flagged malicious: 3.7.1. Treat any of these as compromised.

How do I remediate core-tailwindcss-utility if I installed it?

core-tailwindcss-utility is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed core-tailwindcss-utility — how do I know if it already compromised me?

If core-tailwindcss-utility was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

Is core-tailwindcss-utility part of a known attack campaign?

Yes — core-tailwindcss-utility is associated with the IN-MAL-2026-017984 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find core-tailwindcss-utility across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for core-tailwindcss-utility (version 3.7.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging core-tailwindcss-utility across your stack and pipelines.

Malicious package

core-tailwindcss-utilitynpm

core-tailwindcss-utility is a confirmed malicious npm package (MAL-2026-14118) that steals credentials and exfiltrates sensitive data (malicious version 3.7.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in core-tailwindcss-utility (npm)

MAL-2026-14118

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall core-tailwindcss-utility

What this malware does

Package is advertised as a Tailwind CSS utility but ships no CSS utilities. index.js exports getPlugin() which fetches JSON from the hardcoded bare-IP endpoint https://31.97.137.157:45000/icons/108 and passes the response's credits field to new Function(...) with require, process, and Buffer bound in scope, executing the returned string as Node.js code on the caller's host. A decoy setDefaultModule() constructs cdnjs.<provider> URLs (cloudflare.com, fastly.net, etc.) to disguise the module as a font-awesome/CDN helper, but the actually-invoked path targets the bare-IP C2. Declared dependencies (@primno/dpapi for Windows DPAPI decryption, better-sqlite3/sqlite3, node-machine-id, socket.io-client, axios) are inconsistent with the stated Tailwind purpose and pre-stage the second-stage payload with primitives for browser credential decryption and remote C2, which the fetched code can load via the bound require.

Malicious versions

1 flagged

3.7.1

Indicators of compromise (SHA-256)

67bbda0dc4bcf5478f2edd6a243b1f289f2b0471f950b4362f21b5a6344cdd83

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for core-tailwindcss-utility (version 3.7.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging core-tailwindcss-utility across your stack and pipelines.
If you installed it — respond
core-tailwindcss-utility is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If core-tailwindcss-utility was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks core-tailwindcss-utility before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. core-tailwindcss-utility on npm has been identified as a malicious package (version 3.7.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-017984

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks core-tailwindcss-utility-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

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