registry / Malware / animate-twcss-pack

animate-twcss-pack

A configurable, namespaced Animate.css integration for Tailwind CSS

This report shows the evidence for animate-twcss-pack@2.0.6, the only known version.

OpenSSF/OSV Malicious Advisory

imported 3d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-18067 confirms this npm version as malicious.

Advisory

MAL-2026-18067

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in animate-twcss-pack (npm)

Details

animate-twcss-pack (2.0.6) 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 enterprise0908 on 2026-09-28. 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.

References

OpenSSF/OSV advisory ADVISORY ADVISORY ADVISORY WEB

Independent LPM AI assessment

Manual Review

Independent AI assessment: manual_review. LPM AI review remains unresolved.

The package source shows the unresolved helper is on the style-building path, but does not establish malicious behavior. Review remains unresolved because the helper’s source was unavailable.

Static reason

No blocking static signals were detected.

Trigger

Using the Tailwind plugin to build styles.

Impact

The helper’s behavior and any resulting impact could not be assessed from the available source.

Mechanism

The plugin’s style builder invokes a PostCSS helper whose source was unavailable for inspection.

AI rationale

The package source shows the unresolved helper is on the style-building path, but does not establish malicious behavior. Review remains unresolved because the helper’s source was unavailable.

Evidence

package.jsonplugin.jssrc/motion.jssrc/styles.js

Independent scan evidence

public snapshot

AI called this Manual Review at 79.0% confidence as Unknown with medium false-positive risk.

AI review observations

package.json declares the unresolved @jasperquinn/postcss-motion-helpers dependency at ^1.0.1.
plugin.js imports styles, which imports motion.js; motion.js loads the unresolved helper and passes it to PostCSS when building styles.
The helper’s source could not be verified, so its behavior remains unresolved.

Evidence against

The inspected package entrypoint uses the helper to build PostCSS styles; no malicious behavior was established in the inspected source.

Behavioral surface

Source

Filesystem

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 5 file(s), 10.2 KB of source

Source & flagged code

6 flagged

package.jsonView file

Lines 12-49json

12 ],

13 "homepage": "https://sericpieap.github.io/animate-twcss-pack/",

14 "repository": "https://github.com/sericpieap/animate-twcss-pack/",

15 "author": "sericpieap",

16 "license": "MIT",

17 "keywords": [

18 "tailwindcss",

19 "tailwindcss-plugin",

20 "animate.css",

21 "animation",

22 "keyframes",

23 "motion"

24 ],

25 "scripts": {

26 "lint": "eslint . --ext .js",

27 "test": "node --test"

28 },

29 "dependencies": {

30 "animate.css": "^4.1.1",

31 "postcss": "^8.4.5",

32 "@jasperquinn/postcss-motion-helpers": "^1.0.1",

33 "postcss-js": "^3.0.3",

34 "postcss-selector-parser": "^6.0.8"

35 },

36 "devDependencies": {

37 "eslint": "^8.5.0",

38 "eslint-config-airbnb-base": "15.0.0",

High

Suspicious Dependency Evidence

package.json declares the unresolved @jasperquinn/postcss-motion-helpers dependency at ^1.0.1.

package.jsonView on unpkg · L32

39 "eslint-plugin-import": "^2.25.2",

40 "tailwindcss": "^3.0.7"

41 },

42 "peerDependencies": {

43 "tailwindcss": "^3"

44 },

45 "engines": {

46 "node": ">=18"

47 }

48}

plugin.jsView file

Lines 1-22javascript

1'use strict';

3const tailwindPlugin = require('tailwindcss/plugin');

4const { loadCatalog } = require('./src/catalog');

5const {

src/motion.jsView file

Lines 1-34javascript

1'use strict';

3const postcss = require('postcss');

4const postcssJs = require('postcss-js');

5const

src/styles.jsView file

Lines 1-25javascript

1'use strict';

3const postcss = require('postcss');

4const postcssJs = require('postcss-js');

5const {

Source & flagged code

6 flagged · loading source

package.jsonView file

32"@jasperquinn/postcss-motion-helpers": "^1.0.1", "postcss-js": "^3.0.3", "postcss-selector-parser": "^6.0.8" }, "devDependencies": { "eslint": "^8.5.0", "

High

Suspicious Dependency Evidence

package.json declares the unresolved @jasperquinn/postcss-motion-helpers dependency at ^1.0.1.

package.jsonView on unpkg · L32

plugin.jsView file

6const { buildStyles } = require('./src/styles'); function keyframeTailwindPlugin(options = {}) { const config = normalizeOptions(options); return tailwindPlugin(({ addBa

High

Ai Review Evidence

plugin.js imports styles, which imports motion.js; motion.js loads the unresolved helper and passes it to PostCSS when building styles.

plugin.jsView on unpkg · L6

12const styles = buildStyles(loadCatalog(), config); addBase(styles.base); addUtilities(styles.utilities); }); } keyframeTailwindPlugin.catalog = () => loadCatalog()

High

Findings

6 High2 Low

HighSuspicious Dependency Evidencepackage.json

HighAi Review Evidenceplugin.js

HighAi Review Evidencesrc/motion.js

HighAi Review Evidencesrc/styles.js

HighAi Review Evidenceplugin.js

LowScripts Present

LowFilesystem

Affected versions and remediation

This report applies to animate-twcss-pack@2.0.6.

The versions list below shows the verdict for each recorded version.

Avoid installing animate-twcss-pack@2.0.6. 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: 2026-10-20 10:12:37.001Z (UTC).

Source advisory published: 2026-10-19 00:00:00.000Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

1 known version

2.0.6latestshownMaliciousMalwareBlockPublishedSep 28, 2026, 4:32 PM

OpenSSF/OSV Malicious Advisory

Independent LPM AI assessment

Independent scan evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other malware packages

Behavioral surface

Source & flagged code

Related packages

Other malware packages