MAL-2026-12953

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-independent-bnpl-code-text/MAL-2026-12953.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12953
Published
2026-08-05T14:44:18Z
Modified
2026-08-05T15:51:14.460731478Z
Summary
Malicious code in bnpl-blocks-independent-bnpl-code-text (npm)
Details

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

Source: amazon-inspector (49319e79d8d8fa0eba8e5c5394b3f94eca3e656af0ff26e3326fa456235ed4b1)

On require() of the package, index.js loads init.js which HTTPS-fetches a platform-specific binary (linuxx64, linuxarm64, darwin, win32) from one of four obfuscated Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS-TXT base64-chunked fallback via sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /tmp or Windows Temp under disguised names (.cache<rand>, dotnetdiag<rand>.exe), chmod 0755, and spawned detached via /bin/sh -c or cmd. Destination hosts are reconstructed at runtime by splitting and joining string fragments, filenames impersonate dotnet diagnostics, the fetched payload is not hash- or signature-verified, and none of this behavior relates to the package's stated BNPL purpose. lib/telemetry.js ships a duplicate copy of the same dropper primitives (base64 chunked fetch, chmod 0755, /bin/sh -c detached spawn) under an analytics-SDK cover story, currently unreferenced from the main entry.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T14:44:18Z",
            "source": "amazon-inspector",
            "sha256": "49319e79d8d8fa0eba8e5c5394b3f94eca3e656af0ff26e3326fa456235ed4b1",
            "import_time": "2026-08-05T15:19:50.455051982Z",
            "id": "IN-MAL-2026-015421",
            "versions": [
                "35.2.4"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-independent-bnpl-code-text

Package

Name
bnpl-blocks-independent-bnpl-code-text
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-independent-bnpl-code-text

Affected ranges

Affected versions

35.*
35.2.4

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "bnpl-blocks-independent-bnpl-code-text-35.2.4.tgz",
            "hashes": {
                "sha512_sri": "sha512-xHYeU7pFTJCxB4waMVJ1nCVs9JM+duOsiA4tq5WgQPsYUgKn7VWCIY+kdvQRmaoFmGtRxZ3cTtOaQDt2WaQ7ow==",
                "sha1": "e91e894967c9976a35c43599bb3452a7f7b23264"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "9ca1855a166a70188b70d7e4c7165415f66bf66332c0c2d4f75ca9981fb713882b2efc",
            "sha256": "9fdbe26144e5b68080b210ae798edefdebc0c658aa0a01f43f92e5c038f46b86",
            "path": "_init.js"
        },
        {
            "tlsh": "dd835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "18af013fd9021a9f00dad670aa20a9e2c5e7919bcce473b3262585db648a6b66",
            "path": "lib/telemetry.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-independent-bnpl-code-text/MAL-2026-12953.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]