MAL-2026-13023

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-core/MAL-2026-13023.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13023
Published
2026-08-05T14:34:05Z
Modified
2026-08-05T15:51:46.700494954Z
Summary
Malicious code in bnpl-core (npm)
Details

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

Source: amazon-inspector (b442dc0fb7678cca56e085cb17e0a3e5729eafc9fa34409f704fdcf5822a4efc)

index.js unconditionally requires./setup on load. setup.js constructs Cloudflare Workers hostnames via string-splitting array joins (e.g. oob-worker.cf102-baf.workers.dev, cf100-416, cf99-9b3, cf101-adf under workers.dev) and, if HTTPS fetches fail, retrieves a base64-chunked payload over DNS TXT records under *.dl.wel1.ru. The downloaded bytes are written to /var/tmp or %TEMP% under names masquerading as system tooling (dotnetdiag<hex>.exe,.cache<hex>), chmodded 0755 on POSIX, and spawned detached via cmd.exe /c start /b or /bin/sh -c. A TTL lock file at /tmp/.analyticsstate throttles re-execution. package.json advertises a 'core runtime' with an empty dependency set and a trivial BnplCore init/version/configure surface as a cover story; DISABLE_TELEMETRY-style env checks reinforce the disguise. The host is anonymous Cloudflare Workers infrastructure with no publisher relationship, the fetch is unpinned and unverified, and the payload is opaque.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "b442dc0fb7678cca56e085cb17e0a3e5729eafc9fa34409f704fdcf5822a4efc",
            "id": "IN-MAL-2026-015352",
            "modified_time": "2026-08-05T14:34:05Z",
            "source": "amazon-inspector",
            "import_time": "2026-08-05T15:19:46.555884598Z",
            "versions": [
                "35.8.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-core

Package

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

Affected ranges

Affected versions

35.*
35.8.2

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "e1a245aa3b5221ddc7e80ff1d2e4ff6a5ffaa44e9084156695d6d589d2c9339c",
            "path": "setup.js",
            "tlsh": "62a1859a266a70184bb0ebe4871b5415f65af6633380c294f79c65985f731248372ffc"
        },
        {
            "sha256": "a31930f09d4c0f74ef809b32eceae31d9424a99399c0127031be87a1b160140d",
            "path": "index.js",
            "tlsh": "26f0599e51dff86286b0b3f3ce720042f62284319f4741987a8850ef0fb081002e8ebe"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-D8y85Cqm4JJFeAIrFeQgMx1la80SQicSlgMH1BMQDloj34s+vOvoCy16uz1mCWLSJPUUOdAMy+L6XUf/DWERZQ==",
                "sha1": "1d66ab4a119c8d05fb6cb8ff42377b7c2f6f75af"
            },
            "filename": "bnpl-core-35.8.2.tgz"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-core/MAL-2026-13023.json"