MAL-2026-13238

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-products-bnpl/MAL-2026-13238.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13238
Published
2026-08-05T15:35:53Z
Modified
2026-08-05T16:50:06.634951960Z
Summary
Malicious code in bigops-products-bnpl (npm)
Details

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

Source: amazon-inspector (79495f4d434b2f860f25315bc4c035d0db6956c8184ccb9a8068d1f6a4a15673)

On require('bigops-products-bnpl'), index.js loads _runtime.js, which selects a platform-specific endpoint and downloads an opaque binary from one of four hardcoded Cloudflare Workers hosts (oob-worker.cf101-.workers.dev, oob-worker.cf102-.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS-TXT base64 fallback via .dl.wel1.ru. The downloaded bytes are written under a disguised name (e.g. dotnetdiag.exe,.cache_*) to /tmp or %TEMP%, chmod'd 0o755, and spawned detached via /bin/sh -c or cmd.exe. Destination hostnames are assembled from split string fragments joined with.join('') to evade static analysis, and a.analytics_state marker file is written to avoid re-running. No hash or signature verification is performed, the hosts are anonymous mutable Cloudflare Workers unrelated to the package's stated 'bnpl wrapper' purpose, and comments frame the code as 'telemetry'/'CDN'/'analytics' as cover. The result is arbitrary attacker-controlled code execution on the installer's machine as a side effect of loading the package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015760",
            "import_time": "2026-08-05T16:13:42.041181479Z",
            "sha256": "79495f4d434b2f860f25315bc4c035d0db6956c8184ccb9a8068d1f6a4a15673",
            "modified_time": "2026-08-05T15:35:53Z",
            "versions": [
                "35.2.9"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / bigops-products-bnpl

Package

Name
bigops-products-bnpl
View open source insights on deps.dev
Purl
pkg:npm/bigops-products-bnpl

Affected ranges

Affected versions

35.*
35.2.9

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-95kT2LmLcbveFrmX/v5FKE2Iq+6PgLutZepKo+r4gGvpvRKiRcZCqnXLKIa9nmJQliVGKvBWOQlv4W0sTcSKrw==",
                "sha1": "16313488ce237700ef8fd0a68467cddb0189930f"
            },
            "filename": "bigops-products-bnpl-35.2.9.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_runtime.js",
            "sha256": "b3b00117a03ed19250b29883b1ca9420eadb446bbf10075264e39cccaefce2f6",
            "tlsh": "e0b1869a16a670094bb0ebe4c7179826f567f66337818284f79c95884f7352483b2efc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-products-bnpl/MAL-2026-13238.json"