MAL-2026-13478

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@cats-cdf/authentication/MAL-2026-13478.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13478
Published
2026-08-06T23:55:20Z
Modified
2026-08-07T01:19:45Z
Summary
Malicious code in @cats-cdf/authentication (npm)
Details

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

Source: amazon-inspector (404569337a1e5fc46fff2584e052d2f9f99c3cb8d04e5fb3b5c5d633c178e01c)

The package's preinstall lifecycle script runs on npm install and collects the installer's local username (whoami), hostname, and public IP address (fetched via ifconfig.me), then transmits them as query-string parameters in an HTTP GET request to a hardcoded subdomain of oast.fun (kwphewvexhjbtfduscqybx6q7c862eh0g.oast.fun). oast.fun is an out-of-band interaction/callback service commonly used for reconnaissance and exfiltration in dependency-confusion attacks. The behavior fires automatically on default install with no relation to any documented package purpose.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-016849",
            "import_time": "2026-08-07T00:59:21.583891527Z",
            "modified_time": "2026-08-06T23:55:43Z",
            "sha256": "404569337a1e5fc46fff2584e052d2f9f99c3cb8d04e5fb3b5c5d633c178e01c",
            "source": "amazon-inspector",
            "versions": [
                "3.1.1"
            ]
        },
        {
            "id": "IN-MAL-2026-016847",
            "import_time": "2026-08-07T00:59:21.366232668Z",
            "modified_time": "2026-08-06T23:55:20Z",
            "sha256": "c38c7998a850ceb03e1e9795f5e815bc564a1db2d77bdffb77d22bf9ef2dd608",
            "source": "amazon-inspector",
            "versions": [
                "2.17.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @cats-cdf/authentication

Package

Name
@cats-cdf/authentication
View open source insights on deps.dev
Purl
pkg:npm/%40cats-cdf/authentication

Affected ranges

Affected versions

2.*
2.17.1
3.*
3.1.1

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "scripts/preinstall.js",
            "sha256": "4275061552723f1d31253e74f931ebac93d9f83b772b3c68a53374c1b4c9dd68",
            "tlsh": "6d01f9f7636553f04fc2cd96854eb58b5317a12a7502bca87cbd0a563b49c0c13f22d5"
        }
    ],
    "package_integrity": [
        {
            "filename": "authentication-3.1.1.tgz",
            "hashes": {
                "sha1": "44067ec030eebbba06bd7a44b468c93e7de2043a",
                "sha512_sri": "sha512-iC++nNmO2hZrlxPYyQeaHfHVVxhoedoDFYH+AHxPa2bljcoZT8Yn74EUFBEPhyMtJh7SVxWmAP2VLniLs+t30Q=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@cats-cdf/authentication/MAL-2026-13478.json"