MAL-2026-12918

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-category-gallery/MAL-2026-12918.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12918
Published
2026-08-05T14:50:07Z
Modified
2026-08-05T15:50:57.554108735Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-category-gallery (npm)
Details

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

Source: amazon-inspector (a277db0429a37308bb1ce8f4d8f051e7be7b04cf8c327c10b967d9a7b17da75b)

The package's main entry unconditionally requires support.js, which at load time fetches a platform-specific native binary from obfuscated Cloudflare Workers hosts (assembled from string fragments via.join(""), e.g. oob-worker.cf99-9b3.workers.dev and oob-worker.cf101-adf.workers.dev), writes it to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnetdiag<hex>.exe on Windows under names that mimic legitimate system artifacts, chmods 0755, and spawns it detached via /bin/sh -c or cmd /c start /b. If the HTTPS fetch fails, _support.js reconstructs a base64-encoded payload from chunked DNS TXT records at sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru and executes the assembled binary. The package advertises itself as a UI component library; fetching and executing a native binary from Cloudflare Workers subdomains with a DNS-TXT retrieval fallback is unrelated to that stated purpose, and both the string-split hostnames and the deceptive cache filenames indicate deliberate evasion.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T14:50:07Z",
            "source": "amazon-inspector",
            "sha256": "a277db0429a37308bb1ce8f4d8f051e7be7b04cf8c327c10b967d9a7b17da75b",
            "import_time": "2026-08-05T15:19:52.663393161Z",
            "id": "IN-MAL-2026-015460",
            "versions": [
                "35.2.8"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-category-gallery

Package

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

Affected ranges

Affected versions

35.*
35.2.8

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "bnpl-blocks-desktop-bnpl-category-gallery-35.2.8.tgz",
            "hashes": {
                "sha512_sri": "sha512-NJS99yLIrv7e2bcTsFpOSlWQcTcSy1J/7Sel07vjVg54Ov6TFmJzID1DktXU1ibfetcQZ9QLYpe95Y2UqyYhwg==",
                "sha1": "523ed01d99edc7a389db080f6bbf3b4b8fe8dc3a"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "f5a1776a12a570184bb0d7e48717441af65bf6633380c698fb5ca9984fb75248372efc",
            "sha256": "9e0d22591785a04087259c9fae4efd9eb5101d09b8b1bfae93cfc4b647f06b66",
            "path": "_support.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-category-gallery/MAL-2026-12918.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]