tailwindcss-keyframe-kit@3.0.0
A configurable, namespaced Animate.css integration for Tailwind CSS
OpenSSF/OSV Malicious Advisory
imported 3d ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-18088 confirms this npm version as malicious.
Advisory
MAL-2026-18088
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in tailwindcss-keyframe-kit (npm)
Details
tailwindcss-keyframe-kit (3.0.0, 3.0.1, 3.0.2) 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 hackson306623 on 2026-09-28. src/generators/motion-base.js:5 requires the private scoped package @aaron205whitmore/postcss-animate-utils, 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.
Independent LPM AI assessment
Manual ReviewIndependent AI assessment: manual_review. LPM AI review remains unresolved.
The inspected package code presents a Tailwind style-generation API, with no confirmed attack behavior. The runtime dependency @aaron205whitmore/postcss-animate-utils remains unresolved, so its behavior cannot be verified and a clean verdict is not supported.
Static reason
No blocking static signals were detected.
Trigger
The package’s Tailwind plugin runs during Tailwind style generation.
Impact
Unknown until the helper’s source is reviewed; no specific harmful effect was confirmed.
Mechanism
The generator loads the unavailable helper as a PostCSS plugin; its behavior could not be verified from source.
AI rationale
The inspected package code presents a Tailwind style-generation API, with no confirmed attack behavior. The runtime dependency @aaron205whitmore/postcss-animate-utils remains unresolved, so its behavior cannot be verified and a clean verdict is not supported.
Evidence
package.jsonsrc/index.jssrc/generators/motion-base.js
Independent scan evidence
public snapshotAI called this Manual Review at 84.0% confidence as Unknown with medium false-positive risk.
AI review observations
- package.json lists only lint and test scripts and declares the unresolved helper dependency.
- The Tailwind plugin generates and registers styles when invoked.
- The generator imports the helper and invokes it as a PostCSS plugin while building styles.
Evidence against
- The inspected entrypoint exposes a Tailwind plugin and catalog helpers; no attack behavior was established in those paths.
Behavioral surface
Filesystem
Source & flagged code
4 flagged · loading sourcepackage.jsonView file
24"scripts": {
"lint": "eslint . --ext .js",
"test": "node --test"
},
"dependencies": {
"animate.css": "^4.1.1",
"postcss": "^8.4.5",
"@aaron205whitmore/postcss-animate-utils": "^1.0.1",
"postcss-js": "^3.0.3",
"postcss-selector-parser": "^6.0.8"
},
"de
High
Suspicious Dependency Evidence
package.json lists only lint and test scripts and declares the unresolved helper dependency.
package.jsonView on unpkg · L24src/index.jsView file
8function keyframeKit(options = {}) {
const config = normalizeOptions(options);
return tailwindPlugin(({ addBase, addUtilities }) => {
const styles = buildStyles(loadCatalog(), config);
addBase(styles.base);
addUtilities(styles.
High
Ai Review Evidence
The Tailwind plugin generates and registers styles when invoked.
src/index.jsView on unpkg · L8src/generators/motion-base.jsView file
Findings
4 High2 Low
HighSuspicious Dependency Evidencepackage.json
HighAi Review Evidencesrc/index.js
HighAi Review Evidencesrc/generators/motion-base.js
HighAi Review Evidencesrc/generators/motion-base.js
LowScripts Present
LowFilesystem
Affected versions and remediation
This report applies to tailwindcss-keyframe-kit@3.0.0.
See all versions of tailwindcss-keyframe-kit for other recorded verdicts.
- Avoid installing tailwindcss-keyframe-kit@3.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
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