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Findings

MAL-2026-16282

Malicious code in tailwindcss-form (npm)

Published Sep 18, 2026 · corrected/updated Oct 15, 2026 · evidence confidence medium

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (f5c6b39e2bde3263d10e2f20e707d06b981e746fda83ef7772233db33ae7a4f2) Package name mimics the legitimate tailwindcss-forms plugin (repo field points at tailwindlabs/tailwindcss-forms) but the main entry src/index.js is an obfuscator.io-packed bundle (303-entry rotated string array, control-flow flattening) whose top-level code has no relation to a Tailwind CSS plugin. On require() it loads node:http, node:https, node:zlib, and node:child_process, then issues requests to a set of hardcoded Ethereum endpoints (eth.blockscout.com, *.publicnode.com, *.drpc.org, 1rpc.io/eth) and an INDEXER_URL, carrying an etherscan-style txlist query against a hardcoded wallet address 0xa322E5f3... and custom x-payload-* headers. Response content is stashed into process globals (_t_u, _t_s, _H, _H2) that are then consumed by a child_process.spawn call, giving the operator of the indexer remote code execution on the installer's machine at import time. The combination of typosquatted name, obfuscator.io packing of the main entry, hardcoded remote endpoints acting as a command channel, and spawn of a fetched payload is a supply-chain trojan disguised as a Tailwind plugin. ## Source: ghsa-malware (a6360dfe9a149abb217abe22c0f48a3c37dffdc5b8ed3fb0e637a72cae6efbfc) 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.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

MAL-2026-16282 is a unknown public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: tailwindcss-form (0.5.1). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: no CVSS/EPSS yet. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: github, osv. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 18, 2026 · GitHub Advisory Database

    Detected

    --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (f5c6b39e2bde3263d10e2f20e707d06b981e746fda83ef7772233db33ae7a4f2) Package name mimics the legitimate tailwindcss-forms plugin (repo field points at tailwindlabs/tailwindcss-forms) but the main entry src/index.js is an obfuscator.io-packed bundle (303-entry rotated string array, control-flow flattening) whose t

  2. Oct 15, 2026 · GitHub Advisory Database

    Updated

    --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (f5c6b39e2bde3263d10e2f20e707d06b981e746fda83ef7772233db33ae7a4f2) Package name mimics the legitimate tailwindcss-forms plugin (repo field points at tailwindlabs/tailwindcss-forms) but the main entry src/index.js is an obfuscator.io-packed bundle (303-entry rotated string array, control-flow flattening) whose t

Affected

  • npm tailwindcss-form0.5.1

Sources

References