MAL-2026-12927

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-header-search/MAL-2026-12927.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12927
Published
2026-08-05T14:48:54Z
Modified
2026-08-05T15:51:01.084478538Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-header-search (npm)
Details

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

Source: amazon-inspector (d1af1b8630f713bc29fd99f332ba8035b26022f01199e755f2909d3440019fff)

On require of the package, index.js loads adapter.js whose top-level main() constructs Cloudflare Workers hostnames (oob-worker.cf10{0-3}-.workers.dev) and a DNS-TXT discovery fallback (.dl.wel1.ru) via array-join string splitting, downloads a platform-specific binary, writes it to a temp path under disguised OS-diagnostic filenames (dotnetdiag_*.exe /.cache_*), chmods it 0755, and spawns it detached via spawn("/bin/sh",["-c", filePath+" &"]) or cmd /c start /b. A second variant of the same drop/chmod/spawn chain is present in lib/telemetry.js, using Buffer.from(chunks,"base64") to reconstruct payload bytes. The package presents itself as an analytics/telemetry component (stamp file.analyticsstate, DISABLETELEMETRY opt-out shim) but its declared purpose is a BNPL header-search UI block, which has no legitimate need to execute unsigned remote binaries. The endpoint obfuscation, cover-story naming, DNS-TXT censorship-evasion fallback, and disguised on-disk artifacts are characteristic of a hostile dropper.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "d1af1b8630f713bc29fd99f332ba8035b26022f01199e755f2909d3440019fff",
            "source": "amazon-inspector",
            "versions": [
                "35.2.6"
            ],
            "import_time": "2026-08-05T15:19:52.241613699Z",
            "modified_time": "2026-08-05T14:48:54Z",
            "id": "IN-MAL-2026-015452"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-header-search

Package

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

Affected ranges

Affected versions

35.*
35.2.6

Database specific

indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha1": "edcc4ad871917715f7f60c730901479538b15a34",
                "sha512_sri": "sha512-Iofb22bXt4xH/LgYuCjDrT6R8QBmAj+GJ77hf0Tzv2QV05G3MrZO48Vnx031JG2UH1UGy1zii7y0afhjMzy8cQ=="
            },
            "filename": "bnpl-blocks-desktop-bnpl-header-search-35.2.6.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_adapter.js",
            "sha256": "1a1e77cc0f7c8909664df294c3452c545017648ba2955f1662f006d66cf92188",
            "tlsh": "14a1889a16a670088bb0e7f487175815f65be763378082d4fb5ca5981f7712482b2efc"
        }
    ]
}
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-header-search/MAL-2026-12927.json"