tw-fluid-type
This report shows the evidence for tw-fluid-type@1.0.1, the only known version.
OpenSSF/OSV Malicious Advisory
imported 4mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-5638 confirms this npm version as malicious.
Advisory
MAL-2026-5638
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in tw-fluid-type (npm)
Details
The package advertises itself as a Tailwind CSS fluid-type plugin but ships src/utils/lib.min.js, which is loaded as a side effect when the package's main entry point is required. createClasses.js (reached from src/index.js) does `const lib = require('./lib.min.js')` and never uses the returned value — the only purpose of the require is to trigger the file's IIFE. lib.min.js caches `global.r = require` and `global.m = module`, then runs a ~4KB string through a custom Fisher-Yates-style deterministic shuffle (function YWG, seed 2540575) to decode JavaScript source, resolves the Function constructor via an obfuscated property lookup (`YWG['constructor']`), and invokes `Function(...)(decoded_body)` to execute the decoded code with full access to the cached require/module. A declarative CSS-utility plugin has no legitimate need to construct functions from shuffled-string blobs, cache require/module on the global object, or conceal its executable logic with a custom shuffle. Any consumer who imports this package executes the concealed payload at module load.
## Source: ghsa-malware (634099d977e19e657b6ddd7a5f89bb5739f704a651ff40171609200a43c7682f) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
Source & flagged code
0 flagged · loading sourceNo flagged code excerpts are attached to this scan.
Findings
1 High
HighOsv Malicious Advisory
Affected versions and remediation
This report applies to tw-fluid-type@1.0.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing tw-fluid-type@1.0.1. 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: .
This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.
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