MAL-2026-15912

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tailwind-aspect/MAL-2026-15912.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-15912
Published
2026-09-04T05:19:41Z
Modified
2026-09-04T05:45:05.630189172Z
Summary
Malicious code in tailwind-aspect (npm)
Details

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

Source: amazon-inspector (e6ba6037f5f2f65c0ceef0ba5bd8da931b7860a85e7a38fb2703ad4cd7672ddf)

The package's main entrypoint unconditionally downloads a JavaScript file from the hardcoded plain-HTTP bare-IP URL http://23.27.245.100/index.js, writes it to./inout.js, and require()s it every time a consumer imports the package. The fetched content is unpinned, unverified, and served over cleartext HTTP, giving the operator of that IP (and any on-path attacker) arbitrary code execution on the installer's machine at import time. The package name and repository metadata impersonate the official @tailwindcss/aspect-ratio plugin (repository points at tailwindlabs/tailwindcss-aspect-ratio), providing cover for the loader; the remote fetch has no relationship to any Tailwind plugin functionality.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-09-04T05:39:32.835224008Z",
            "source": "amazon-inspector",
            "versions": [
                "0.4.2"
            ],
            "id": "IN-MAL-2026-019478",
            "modified_time": "2026-09-04T05:19:41Z",
            "sha256": "e6ba6037f5f2f65c0ceef0ba5bd8da931b7860a85e7a38fb2703ad4cd7672ddf"
        }
    ]
}
References
Credits

Affected packages

npm / tailwind-aspect

Package

Name
tailwind-aspect
View open source insights on deps.dev
Purl
pkg:npm/tailwind-aspect

Affected ranges

Affected versions

0.*
0.4.2

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tailwind-aspect/MAL-2026-15912.json"
indicators 
{
    "evidence_files": [
        {
            "path": "src/index.js",
            "tlsh": "f43165b1068185044861769793619c42e6dbb1b4ce7e8082ead54c7947c1dd1bb12ebb",
            "sha256": "2675b2db17a311c8c48797fb24aaeed4d548c598f165f7a55ce5f74f76669f62"
        },
        {
            "path": "package.json",
            "tlsh": "1cf07822ce240e7305e4716197ba0597a2a318274418bc0e31c2860c8b8c5aff0f966d",
            "sha256": "a6ec6fac54dc0d8b2d6058238711ead8eb3923c2446df4efeb53cf0b85319c15"
        }
    ],
    "package_integrity": [
        {
            "filename": "tailwind-aspect-0.4.2.tgz",
            "hashes": {
                "sha1": "3bbee69f54d82f387bf5fb3bca01d7e42cf6346a",
                "sha512_sri": "sha512-SVOBQKYnHRoBT/H4AF7qIbf3SE632ZVJnknnwQYnqd9+2NsCYDB7/7iP1+K51P9AT8pxbkn8KACV/CLbdNPL0g=="
            }
        }
    ]
}
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]