MAL-2026-12911

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-action-panel/MAL-2026-12911.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12911
Published
2026-08-05T14:51:48Z
Modified
2026-08-05T15:50:54.732703746Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-action-panel (npm)
Details

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

Source: amazon-inspector (6a42e260d378e0b517e59b4656f10bb75ffe083a5f8431b4d6a908ec4dae0cb0)

On require() of the package's main entry, _compat.js reconstructs Cloudflare Workers hostnames (oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev) from split string fragments joined at runtime, downloads a platform-specific binary via https.get, writes it to a temp path disguised as a system file (.cache_<hex> on unix, dotnet_diag_<hex>.exe on Windows), chmods it 0755, and spawns it detached via /bin/sh -c on unix or cmd /c start /b on Windows. If the HTTPS fetch fails, the code falls back to a DNS-over-TXT channel querying chunked TXT records under sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, base64-decodes the concatenated chunks, and uses the result as the executable payload. The child_process module is likewise obtained via require("child_"+"process") in a sibling telemetry file, and cover-story comments label the behavior as analytics/telemetry. The runtime string reconstruction of destinations, disguised filenames, detached-spawn pattern, and DNS-TXT egress-bypass channel are consistent with a load-time remote code execution dropper against any host that installs or imports this package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-05T15:19:53.273752277Z",
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T14:51:48Z",
            "sha256": "6a42e260d378e0b517e59b4656f10bb75ffe083a5f8431b4d6a908ec4dae0cb0",
            "id": "IN-MAL-2026-015472",
            "versions": [
                "35.3.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-action-panel

Package

Name
bnpl-blocks-desktop-bnpl-action-panel
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-desktop-bnpl-action-panel

Affected ranges

Affected versions

35.*
35.3.1

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-action-panel/MAL-2026-12911.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "b87e9b35da4ec601311539719a1c1c5161c4986bc885191d3ad5eedcfa408116",
            "tlsh": "2bb1959a166671184fb0e7e4c7178825f65bf66337808294fb9ca5845f7312483b2efc",
            "path": "_compat.js"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-desktop-bnpl-action-panel-35.3.1.tgz",
            "hashes": {
                "sha1": "b5852228c340a0597a329ae46dd75ceb739dc7d7",
                "sha512_sri": "sha512-y9WUg4A8Liitu8Oib0pGkmWXW1YgVtK6NJAjAJg2Nx8BRcxErlCJdC3aALBkzxz9jTo8yczA6CpPbWfRH8deQg=="
            }
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]