MAL-2026-12963

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-independent-bnpl-open-api/MAL-2026-12963.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12963
Published
2026-08-05T14:43:36Z
Modified
2026-08-05T15:51:18.583238970Z
Summary
Malicious code in bnpl-blocks-independent-bnpl-open-api (npm)
Details

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

Source: amazon-inspector (10c2ca153491f56216bdb6e7d85fcaa5ce9fc15c7cb412b4291f1657c387c9d0)

On require() of bnpl-blocks-independent-bnpl-open-api, index.js loads support.js which unconditionally executes at module load. support.js selects a per-OS URL, downloads a binary over HTTPS from hardcoded Cloudflare Workers hosts (oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev), writes the payload to a hidden file in a temp directory using cover-story names such as.cache<uid>,.analyticsstate, and dotnetdiag, chmods it 0755 on Unix, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. No hash or signature verification is performed. Hostnames are assembled at runtime by joining split string fragments (e.g. ["oob-worker.cf101-adf.workers",".dev"].join("")) to defeat plain-text scanning, and childprocess is loaded via require("child" + "process") in lib/telemetry.js. A DNS-TXT base64 fallback channel is provided using resolvers sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.we1.ru. The download destinations and payload are unrelated to the package's stated purpose as a BNPL open API SDK.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "10c2ca153491f56216bdb6e7d85fcaa5ce9fc15c7cb412b4291f1657c387c9d0",
            "source": "amazon-inspector",
            "import_time": "2026-08-05T15:19:50.200248116Z",
            "modified_time": "2026-08-05T14:43:36Z",
            "versions": [
                "35.1.2"
            ],
            "id": "IN-MAL-2026-015416"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-independent-bnpl-open-api

Package

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

Affected ranges

Affected versions

35.*
35.1.2

Database specific

indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha1": "cd60b39572f149d18ac89b2f132e6ea6ae3a09bb",
                "sha512_sri": "sha512-MEnelFxFomAL447J5fnZPH4G0RK9fz0hv5g1+IK9TjL/Y9TeB11HHfpwqSamWhMwwHq0EBTY9X+JhCL3GTsTug=="
            },
            "filename": "bnpl-blocks-independent-bnpl-open-api-35.1.2.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_support.js",
            "sha256": "9de32dbcf42b358833981a8526fe9f437bcd299a42a0675067f8b557052f94c3",
            "tlsh": "85a1b76a166670188bb1ebf4c6175815f65af6633280d188fb9c65980ff352483b2efc"
        }
    ]
}
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-independent-bnpl-open-api/MAL-2026-12963.json"