MAL-2026-13604

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tailwindcss-motion-advanced/MAL-2026-13604.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13604
Published
2026-08-07T12:29:45Z
Modified
2026-08-07T13:21:01.030354980Z
Summary
Malicious code in tailwindcss-motion-advanced (npm)
Details

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

Source: amazon-inspector (6b8426c39ffcba11d95e8ede8085ce260dbcf8527544ce9ca3a1d7a59618f0eb)

On require of the package's main entry, lib/utils.min.js queries Ethereum RPC endpoints (eth.blockscout.com/api, 1rpc.io/eth, eth.drpc.org, ethereum-rpc.publicnode.com, eth-mainnet.public.blastapi.io) for the latest outbound transaction from the hardcoded address 0xa322E5f3D311D3080e6f0121063e9aDC2490Ef1a, parses two IPv4 C2 hosts from the transaction's to field, fetches an XOR-encoded JavaScript payload over plain HTTP at http://<ip>:443/0x/cls, decodes it, and executes it via both eval and a detached spawn('node', ['-e', payload]). Sensitive identifiers (http, https, child_process, zlib, url, URLs, HTTP methods, header names, the attacker address) are hidden behind \uXXXX unicode escapes, and the response body and x-payload-b64 header are XOR-decoded with a per-URL key before execution. The package is presented as a Tailwind CSS plugin and has no legitimate need for Ethereum RPC access, IP derivation from on-chain data, or execution of remotely fetched code.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "1.0.1"
            ],
            "id": "IN-MAL-2026-017004",
            "import_time": "2026-08-07T12:51:21.825236508Z",
            "modified_time": "2026-08-07T12:29:45Z",
            "source": "amazon-inspector",
            "sha256": "6b8426c39ffcba11d95e8ede8085ce260dbcf8527544ce9ca3a1d7a59618f0eb"
        }
    ]
}
References
Credits

Affected packages

npm / tailwindcss-motion-advanced

Package

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

Affected ranges

Affected versions

1.*
1.0.1

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "tailwindcss-motion-advanced-1.0.1.tgz",
            "hashes": {
                "sha512_sri": "sha512-M1xGRmzww82urGhMmdnomkXC6i9fFGjwDAgjV2jbA0cPcoSOQf34qTxLkfbwUptGeW8nN/IFXaXdbeYXI5cQtg==",
                "sha1": "1ce4726fe123faf79f41407b1583c4e7b4926a81"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "lib/utils.min.js",
            "tlsh": "d4021ea05379adba82315a44cc34be0de1b4dcb56d4bd02af82b3c89dd7a1d08b9176c",
            "sha256": "bb2f325edfc3e4383d88b985aa203f13d238612dd0487405e808dc9cf64720e3"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tailwindcss-motion-advanced/MAL-2026-13604.json"