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Malicious package

animatecss-tailwind-presetsnpm

Advisory published Updated

animatecss-tailwind-presets is a confirmed malicious npm package (MAL-2026-18073) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 2.0.3). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in animatecss-tailwind-presets (npm)

MAL-2026-18073
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall animatecss-tailwind-presets

What this malware does

animatecss-tailwind-presets (1.0.0, 2.0.3) is a Tailwind CSS plugin from the fake job interview campaign behind MAL-2026-17665 and MAL-2026-17666: the same Animate.css integration template, README and description, published by elony16 on 2026-09-29. src/motion.js:5 requires the private scoped package @jasperquinn/postcss-motion-helpers, which is not readable on the public registry and resolves only with the npm token committed in the lure repository's web/.npmrc, so the code it delivers runs when tailwind.config.js loads the plugin and the dev server starts. The published tarball contains no install scripts and no network code; the payload lives in the private dependency, which was not retrieved. Twenty-six such packages under seventeen accounts were published between 2026-07-28 and 2026-10-09.

Malicious versions

2 flagged
1.0.02.0.3

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for animatecss-tailwind-presets (2 malicious versions).

  2. If you installed it — respond

    animatecss-tailwind-presets 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.

  3. Did it already run?

    If animatecss-tailwind-presets 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. animatecss-tailwind-presets on npm has been identified as a malicious package (versions 1.0.0, 2.0.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

References

Credits

  • pkgwarden · finder

Detect & block this

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

Explore

animatecss-tailwind-presets (npm) malicious package — MAL-2026-18073 | O3 Security