registry / Malware / animatecss-tailwind-presets

animatecss-tailwind-presets

A configurable, namespaced Animate.css integration for Tailwind CSS

This report shows the evidence for animatecss-tailwind-presets@2.0.3. 2 of 2 known versions are blocked or flagged. See all versions.

OpenSSF/OSV Malicious Advisory

imported 3d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-18073 confirms this npm version as malicious.

Advisory

MAL-2026-18073

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in animatecss-tailwind-presets (npm)

Details

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.

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 inspected entrypoint and local code construct Tailwind CSS, with no package lifecycle hook shown. The plugin directly invokes a runtime helper whose source is unavailable, so the dependency boundary prevents a clean verdict.

Static reason

No blocking static signals were detected.

Trigger

Tailwind invokes the package plugin during CSS generation.

Impact

The helper's behavior cannot be assessed from the available source; no concrete harmful effect is established.

Mechanism

The plugin builds CSS styles through a helper dependency whose implementation could not be inspected.

AI rationale

Evidence

package.jsonsrc/motion.js

Independent scan evidence

public snapshot

AI called this Manual Review at 87.0% confidence as Unknown with medium false-positive risk.

AI review observations

The manifest declares @jasperquinn/postcss-motion-helpers as a runtime dependency.
src/motion.js imports that dependency and invokes it to build CSS styles.
The plugin entrypoint calls the style builder when Tailwind invokes the plugin.

Evidence against

The package manifest lists only lint and test scripts; no lifecycle hook is shown.

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

5 flagged

package.jsonView file

Lines 5-49json

5 "main": "plugin.js",

6 "exports": "./plugin.js",

7 "files": [

8 "plugin.js",

9 "src",

10 "README.md",

11 "LICENSE"

12 ],

13 "homepage": "https://sericpieap.github.io/animatecss-tailwind-presets/",

14 "repository": "https://github.com/sericpieap/animatecss-tailwind-presets/",

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",

High

Suspicious Dependency Evidence

The manifest declares @jasperquinn/postcss-motion-helpers as a runtime dependency.

package.jsonView on unpkg · L25

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

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

35 },

High

Suspicious Dependency Evidence

The manifest declares @jasperquinn/postcss-motion-helpers as a runtime dependency.

package.jsonView on unpkg · L32

36 "devDependencies": {

37 "eslint": "^8.5.0",

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

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}

src/motion.jsView file

Lines 1-34javascript

1'use strict';

3const postcss = require('postcss');

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

5const

plugin.jsView file

Lines 1-22javascript

1'use strict';

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

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

5const

Source & flagged code

5 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" }

High

Suspicious Dependency Evidence

The manifest declares @jasperquinn/postcss-motion-helpers as a runtime dependency.

package.jsonView on unpkg · L32

25"scripts": { "lint": "eslint . --ext .js", "test": "node --test" }, "dependencies": { "animate.css": "^4.1.1", "postcss": "^8.4.5", "@jasperquinn/

High

Suspicious Dependency Evidence

The manifest declares @jasperquinn/postcss-motion-helpers as a runtime dependency.

package.jsonView on unpkg · L25

src/motion.jsView file

5const postcssAnimateUtils = require('@jasperquinn/postcss-motion-helpers'); function toPostcssOptions(config) { return { variables: {

High

Suspicious Dependency Evidence

Findings

5 High2 Low

HighSuspicious Dependency Evidencepackage.json

HighSuspicious Dependency Evidencesrc/motion.js

HighAi Review Evidenceplugin.js

HighSuspicious Dependency Evidencepackage.json

LowScripts Present

LowFilesystem

Affected versions and remediation

This report applies to animatecss-tailwind-presets@2.0.3.

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

Avoid installing animatecss-tailwind-presets@2.0.3. 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 10:13:19.170Z (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

2 known versions

2.0.3latestshownMaliciousMalwareBlockPublishedSep 29, 2026, 9:44 PM 1.0.0MaliciousMalwareBlockPublishedSep 29, 2026, 9:37 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