Malicious code in tailwindcss-contact-forms (npm)

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--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (cc68c81374c5b78e36fea2f599c5e0004ead6e56dfd02b40cec4f73c62193b30) The package presents itself as a Tailwind CSS forms plugin (README, repository field, and installation docs are copied verbatim from @tailwindcss/forms) but its sole main module src/index.js is a heavily obfuscator.io-obfuscated Node loader with no CSS-plugin functionality. On require(), the module executes top-level code that installs a createRequire and publishes require, module, and global into named globals (global.r, global.m, global.i, plus several _H/_t_u/_t_s handles) and imports spawn from node:child_process — a stager shape that hands arbitrary execution primitives to code assembled from the rotating string array. It also enumerates public Ethereum JSON-RPC endpoints (drpc.org, publicnode.com, blockscout, blastapi.io) and an Etherscan-like indexer, calls eth_blockNumber / eth_getBlockByNumber / eth_getTransactionCount, and pulls the transaction list for a hardcoded 42-character Ethereum address 0xa322E5f39aDC2490Ef6f0121063eD311D3080e1a, using the returned data as C2 signalling. Results are POSTed with a custom X-Payload-* header to an external endpoint reconstructed from string-array fragments ending in ut.com/api. A CSS plugin has no legitimate reason for obfuscation, node:child_process, or Ethereum RPC traffic; the cover story does not match the shipped code, and the payload runs the moment a developer requires the package.

Source published

10 Sep 2026 18:05:11 UTC

Source modified

14 Sep 2026 16:32:03 UTC

Saved here

24 Oct 2026 13:17:17 UTC

Source terms

OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.