---
id: "MAL-2026-19145"
page: "https://infrastack.ai/live/MAL-2026-19145"
kind: "package"
aliases: ["MAL-2026-19145"]
title: "Malicious code in tailwindcss-hook-forms (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "tailwindcss-hook-forms", "fixed": [], "affected": "= 0.5.2", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-11-11T20:55:10+00:00"
first_seen_at: "2026-11-11T21:29:24+00:00"
updated_at: "2026-11-11T21:31:13+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-19145", "first_seen_at": "2026-11-11T21:29:24+00:00"}]
exploit_sources: []
---

# Malicious code in tailwindcss-hook-forms (npm)

Link for people: https://infrastack.ai/live/MAL-2026-19145 (this .md is for agents)

## Affected

- npm:tailwindcss-hook-forms affected = 0.5.2 fixed no fixed version listed

## Timeline

- 2026-11-11T21:29:24+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-19145

## From the sources

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_-= Per source details. Do not edit below this line.=-_

## Source: amazon-inspector (d504fed314f875b17a90d039af71b0798636e5030373e5d959871dc356bc7bef)
The package impersonates @tailwindcss/forms: name, repository (tailwindlabs/tailwindcss-forms), author (@tailwindcss), README, CHANGELOG, and HTML are copied from the legitimate plugin, with a demo link to tailwindcss-hook-forms.vercel.app. src/index.js prepends a hand-rolled string-permutation decoder (spin() with magic constants NX/SX, splitLane/peel wrappers) that resolves the Function constructor via peel.constructor and immediately invokes a function compiled from a ~15KB opaque, obfuscated string literal, passing the host require into it. This fires whenever any consumer imports the package, running attacker-controlled code in the installer's Node.js process with full access to require, process, filesystem, and network. The subsequent code replicates the public API of @tailwindcss/forms as cover. The obfuscator scheme does not exist in the legitimate plugin and its only purpose is to conceal the executable body from review.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_