MAL-2026-12983

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-card-panel/MAL-2026-12983.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12983
Published
2026-08-05T14:40:58Z
Modified
2026-08-05T15:51:27.860551757Z
Summary
Malicious code in bnpl-blocks-mobile-bnpl-card-panel (npm)
Details

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

Source: amazon-inspector (771f50f1caeef482c61cb9cac57b07ec92059e3e9cb7cf9ee2ef1d9f87a4b59c)

On require() of this package, index.js loads loader.js, which selects a platform-specific payload path and fetches an opaque binary over HTTPS from a rotating set of Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev) whose hostnames are assembled at runtime by array-join string concatenation to evade static string matching. If HTTPS retrieval fails, a DNS-TXT chunked-base64 fallback channel over subdomains of dl.wel1.ru is used to reassemble the payload. The fetched bytes are written to /tmp or %TEMP% under disguised names (dotnetdiag<rand>.exe,.cache<rand>), chmodded 0755, and spawned detached via /bin/sh -c or cmd.exe with stdio ignored. Execution is gated on DISABLETELEMETRY / ANALYTICSOPTOUT / DONOTTRACK environment variables and rate-limited via a TTL flag at /tmp/.analyticsstate, framing the behavior as opt-out telemetry. A sibling lib/telemetry.js (81KB, not referenced by index.js) mirrors the same fetch/chmod/spawn pattern as a secondary dropper. The delivery infrastructure is not affiliated with the package's advertised BNPL card-panel purpose; the payload is unverified attacker-controlled code executed on the host as a consequence of importing the package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T14:40:58Z",
            "id": "IN-MAL-2026-015398",
            "import_time": "2026-08-05T15:19:49.233222012Z",
            "versions": [
                "35.1.3"
            ],
            "source": "amazon-inspector",
            "sha256": "771f50f1caeef482c61cb9cac57b07ec92059e3e9cb7cf9ee2ef1d9f87a4b59c"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-mobile-bnpl-card-panel

Package

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

Affected ranges

Affected versions

35.*
35.1.3

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "bnpl-blocks-mobile-bnpl-card-panel-35.1.3.tgz",
            "hashes": {
                "sha512_sri": "sha512-ovU0FuGTTi2hSt7CW9z3ma2ZQFircJWOkbAvvKfKrrTaGPQCwEAKZv/Xe6rMMGFibfcZFQErA3dtqqU6W5obrQ==",
                "sha1": "afedd8f4d3de6ccf98c5e9e17809d208e6861f92"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_loader.js",
            "tlsh": "a7a1a79a16a670084b70abe5c7174416f65af6633781c184fb9c95941f76134c3b2efc",
            "sha256": "99a322fad6805ddf4b2a089c7f3b2f57368a10e53e66773334b3a8ad6166baec"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-card-panel/MAL-2026-12983.json"