tailwind-aspect
This report shows the evidence for tailwind-aspect@0.4.2, the only known version.
This package appears in our research on the fake Tailwind CSS plugins, with how it works, the full package list and what to do if you installed it.
OpenSSF/OSV Malicious Advisory
imported 2mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-15912 confirms this npm version as malicious.
Advisory
MAL-2026-15912
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in tailwind-aspect (npm)
Details
The package's main entrypoint unconditionally downloads a JavaScript file from the hardcoded plain-HTTP bare-IP URL http://23.27.245.100/index.js, writes it to./inout.js, and require()s it every time a consumer imports the package. The fetched content is unpinned, unverified, and served over cleartext HTTP, giving the operator of that IP (and any on-path attacker) arbitrary code execution on the installer's machine at import time. The package name and repository metadata impersonate the official @tailwindcss/aspect-ratio plugin (repository points at tailwindlabs/tailwindcss-aspect-ratio), providing cover for the loader; the remote fetch has no relationship to any Tailwind plugin functionality.
References
Independent scan evidence
public snapshotBehavioral surface
DynamicRequireFilesystemNetwork
UrlStrings
Source & flagged code
1 flaggedtests/test.jsView file
1const postcss = require('postcss')
L2:
Medium
Dynamic Require
Package source references dynamic require/import behavior.
tests/test.jsView on unpkg · L1Findings
2 Medium3 Low
MediumDynamic Requiretests/test.js
MediumNetwork
LowScripts Present
LowFilesystem
LowUrl Strings
Affected versions and remediation
This report applies to tailwind-aspect@0.4.2.
The versions list below shows the verdict for each recorded version.
- Avoid installing tailwind-aspect@0.4.2. 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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