MAL-2026-12575

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/checkout-mobile-input-card/MAL-2026-12575.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12575
Published
2026-08-05T14:11:27Z
Modified
2026-08-05T14:35:30.954405585Z
Summary
Malicious code in checkout-mobile-input-card (npm)
Details

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

Source: amazon-inspector (b8121f8e2d367655a7ee2c6b8630e4e6210cee3b5ecded80de7e07f7dc61446e)

On require() of the package, index.js loads shim.js which downloads a platform-specific binary from obfuscated Cloudflare Workers subdomains (hostnames reconstructed via array-join splits such as ["oob-worker.cf103-070.wor","kers.","de","v"].join("")) with a DNS TXT covert-channel fallback that reassembles a base64-encoded binary from numbered TXT records under *.dl.wel1.ru. The downloaded payload is written to /var/tmp/.cacheXXXX on Unix or %TEMP%\dotnetdiagXXXX.exe on Windows (masquerading as cache/diagnostic files), chmod 755'd, and spawned detached via /bin/sh -c or cmd.exe /c start /b. Additional string-splitting obfuscates identifiers such as require("child_" + "process") and fs["chmod" + "Sync"]. The package name mimics a legitimate checkout/payments component.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "b8121f8e2d367655a7ee2c6b8630e4e6210cee3b5ecded80de7e07f7dc61446e",
            "id": "IN-MAL-2026-015201",
            "modified_time": "2026-08-05T14:11:27Z",
            "source": "amazon-inspector",
            "import_time": "2026-08-05T14:20:12.365603641Z",
            "versions": [
                "35.7.7"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / checkout-mobile-input-card

Package

Name
checkout-mobile-input-card
View open source insights on deps.dev
Purl
pkg:npm/checkout-mobile-input-card

Affected ranges

Affected versions

35.*
35.7.7

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "75763f8d7d1432cddead88e143286ffd83a28349b43c7bfd01379a3b3c55d8a9",
            "path": "_shim.js",
            "tlsh": "81a1c76a16a530184bb0d7e0c7175416f55af2633380d2d4fbaca5980fb322483b2efc"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-EK1T2yhER1a1XKR1RehuQ8BPA3o040ddKYlcH5y74Gs9eTlMK1D8olRIq/Hqd/dD/NBQTWrP6bWH0mlsRAkLIQ==",
                "sha1": "5874b3d9ed650f6dfdf6953695705b7a96cdd8ad"
            },
            "filename": "checkout-mobile-input-card-35.7.7.tgz"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/checkout-mobile-input-card/MAL-2026-12575.json"