---
id: "GHSA-cpgv-j9j3-hc97"
kind: "package"
aliases: ["GHSA-cpgv-j9j3-hc97", "MAL-2026-17310"]
title: "Malicious code in tailwind-forms-kit (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "tailwind-forms-kit", "fixed": [], "affected": "all versions", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-09-30T01:27:06+00:00"
first_seen_at: "2026-11-04T01:15:41+00:00"
updated_at: "2026-11-04T01:16:55+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-17310", "first_seen_at": "2026-11-04T01:15:41+00:00"}]
---

# Malicious code in tailwind-forms-kit (npm)

## Affected

- npm:tailwind-forms-kit affected all versions fixed ?

## Timeline

- 2026-11-04T01:15:41+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-17310

## From the sources

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

## Source: amazon-inspector (a1083ea1ddf83f29a443e7ba4b24db0d24da35dfd0a9d0ac032ae20501ac57ea)
npm package tailwind-forms-kit@0.5.1 impersonates the @tailwindcss/forms plugin: the package.json name field is ' tailwind-forms-kit' (with a leading space), the README mirrors tailwindlabs/tailwindcss-forms, and the repository field points at the legitimate tailwindlabs/tailwindcss-forms repo. The shipped src/index.js (the package's main entry) is not a Tailwind plugin. It is a single-line obfuscator.io-obfuscated loader (string array _0x18ab with 303 entries, rotate/shift IIFE, decoder _0x35ba, hex-named variables) that at require() time imports node:http, node:https, node:zlib, and spawn from node:child_process. It reassembles at runtime a hardcoded Ethereum sender address (0xa322E5f39aDC2490EfD311D3080e6f0121063e1a) and a list of public Ethereum RPC endpoints and an Etherscan-style indexer URL (publicnode.com, 1rpc.io, drpc.org, blockscout) from string-array indices, queries the indexer for that sender's transaction list ('?module=ac...on=txlist&address=...'), reconstructs a payload from the returned on-chain transaction data, and hands the reconstructed bytes to node:child_process spawn / dynamic execution via global slots (_t_u, _t_s, _H, _H2). This is the EtherHiding blockchain-hosted-C2 pattern: whoever controls the sender address controls arbitrary code executed on any host that installs or requires the package, with no version pin, no hash verification, and blockchain-data transport chosen to evade domain and URL blocklists. The Tailwind branding, copied README, and misleading repository URL are cover for the loader.

## Source: ghsa-malware (0e4d1c766732546052e1051145bef0096541b69f049903b4ae42be0572c6b6e8)
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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_