MAL-2026-12917

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-card-panel/MAL-2026-12917.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12917
Published
2026-08-05T14:52:32Z
Modified
2026-08-05T15:50:57Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-card-panel (npm)
Details

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

Source: amazon-inspector (c8a6a3ee94c8a00269c44eb09de0f4e5234a6df3a4081ec7fe0d0fa6ccd0b01e)

On require, index.js loads polyfill.js which selects a platform-specific payload path, downloads bytes over HTTPS from string-split-obfuscated Cloudflare workers.dev hostnames (oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev) with a DNS-TXT chunked base64 fallback over sdk.dl.wel1.ru, writes the bytes to a temp file under a decoy name (dotnet_diag.exe /.cache_), chmods it 0755, and spawns it detached via cmd.exe or /bin/sh. There is no version pin, no hash check, and no signature verification. Destination hostnames are assembled by concatenating string fragments (e.g. ["oob-worker.cf101-adf.workers.","de","v"].join("")) and a DNS-TXT covert-channel fallback (resolveTxt("c."+domain) + base64 decode) is implemented to survive HTTPS egress blocking. The child_process spawn of a downloaded binary confirms code execution, not telemetry.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-015477",
            "import_time":  "2026-08-05T15:19:53.538090876Z",
            "modified_time":  "2026-08-05T14:52:32Z",
            "sha256":  "c8a6a3ee94c8a00269c44eb09de0f4e5234a6df3a4081ec7fe0d0fa6ccd0b01e",
            "source":  "amazon-inspector",
            "versions":  [
                "35.9.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-card-panel

Package

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

Affected ranges

Affected versions

35.*
35.9.2

Database specific

cwes 
[
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "_polyfill.js",
            "sha256":  "8d1353c41097c0d94574b05a2c8d2c01ac53d582a2120b78208035b8138ce554",
            "tlsh":  "a6b1c79a02a670198bb0d7e4c71b8826f65af6633780c1c0fb5ca5841f7752483b2efc"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "bnpl-blocks-desktop-bnpl-card-panel-35.9.2.tgz",
            "hashes":  {
                "sha1":  "656faa999ef7672200eeb531b0368f7cef3638c3",
                "sha512_sri":  "sha512-6LC1/7MdHev4UU251oLl3sN63TzQNBC/xhvMYo4YOSCSKV2tIphrhK35Nb1iIAoKp/o19+6LaRa5fKIo7SmO6w=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-card-panel/MAL-2026-12917.json"