MAL-2026-16295

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tailwindcss-forms-ui/MAL-2026-16295.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16295
Published
2026-09-18T20:25:14Z
Modified
2026-09-18T20:45:07Z
Summary
Malicious code in tailwindcss-forms-ui (npm)
Details

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

Source: amazon-inspector (6f2bdfef8937b1e6ef4979181693e00adbdfbe7521b8b240268f76beff8b3be8)

The package name typosquats @tailwindcss/forms but its main entry src/index.js is a 39 KB obfuscator.io bundle (303-entry rotating string array, hex-named identifiers, control-flow flattening) with no Tailwind/CSS functionality. On require(), the module attaches require and module to global scope, then queries Ethereum JSON-RPC endpoints (eth.publicnode.com, 1rpc.io/eth, eth-mainnet.public.blastapi.io, eth.drpc.org) and Etherscan/Blockscout txlist APIs for transactions from the hardcoded sender address 0xa322E5f39aDC2490EfD311D3080e6f0121063e1a, decompresses the returned transaction data (gzip/deflate/brotli), and passes it to code-construction and node:child_process.spawn sinks. The hardcoded sender's on-chain transactions are a mutable, attacker-controlled payload channel (EtherHiding pattern), granting arbitrary code execution on any installer that require()s the module.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-020188",
            "import_time":  "2026-09-18T20:38:13.863251763Z",
            "modified_time":  "2026-09-18T20:25:14Z",
            "sha256":  "6f2bdfef8937b1e6ef4979181693e00adbdfbe7521b8b240268f76beff8b3be8",
            "source":  "amazon-inspector",
            "versions":  [
                "0.5.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / tailwindcss-forms-ui

Package

Name
tailwindcss-forms-ui
View open source insights on deps.dev
Purl
pkg:npm/tailwindcss-forms-ui

Affected ranges

Affected versions

0.*
0.5.2

Database specific

cwes 
[
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "src/index.js",
            "sha256":  "fd1ef3edfc6c02581abf6bf69f9e73b19ca8d3ddc915fa51beba648e6c0ae62f",
            "tlsh":  "e103e9957e81121a33434f7fba1bf4e4e12a1899369448c7d21cbc94f8e631ae9f6d34"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "tailwindcss-forms-ui-0.5.2.tgz",
            "hashes":  {
                "sha1":  "098bbab02e9ff93deea3d16cf896658488c0b950",
                "sha512_sri":  "sha512-0Ms4seAbUY3cYwuQo0xrWoxBemzYpqwWF+7CCUwan1NXmTe1XmvYSuGWZaGf9Wwex4Bdnv7MhwNxkNvNrDLLEw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tailwindcss-forms-ui/MAL-2026-16295.json"