MAL-2026-12962

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-independent-bnpl-navigation/MAL-2026-12962.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12962
Published
2026-08-05T14:44:01Z
Modified
2026-08-05T15:51:18.289300596Z
Summary
Malicious code in bnpl-blocks-independent-bnpl-navigation (npm)
Details

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

Source: amazon-inspector (7923e39747ffb32d18cc1b5bfa2c85edf342475c9bd998b65fb407acd5592c44)

On require(), compat.js selects a platform-specific path and downloads a binary from one of four hardcoded Cloudflare Workers hosts whose names are assembled at runtime by joining split-string arrays to evade static analysis (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS TXT fallback channel that reassembles base64-encoded chunks from records under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under disguised names (.cache<hex> on Unix, dotnetdiag<hex>.exe on Windows), chmod 0755, and executed detached via spawn("/bin/sh",["-c", path+" &"], {detached:true}) or cmd.exe /c start /b. No hash or signature verification is performed on the downloaded artifact; execution is gated only by environment-variable flags and a 22956-second time marker. The package name mimics a BNPL WordPress-blocks helper but the shipped code performs no such function.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015419",
            "import_time": "2026-08-05T15:19:50.345498179Z",
            "sha256": "7923e39747ffb32d18cc1b5bfa2c85edf342475c9bd998b65fb407acd5592c44",
            "modified_time": "2026-08-05T14:44:01Z",
            "versions": [
                "35.8.4"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-independent-bnpl-navigation

Package

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

Affected ranges

Affected versions

35.*
35.8.4

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-7wJgZIcZ+rd4eNpXzGYMrElEoIOix8Sy7tDHDtdRBPLDFJGdehyPzXRfvaTb93gTTWmMFOZN3+PN5eq36rBbbw==",
                "sha1": "925d21a2521ef4f5fb6ece4597cb52259e03095f"
            },
            "filename": "bnpl-blocks-independent-bnpl-navigation-35.8.4.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_compat.js",
            "sha256": "bdf4fe8e3d4b31dc609278738fe20a10cdb89fb5108e2926b2565becd7ab75c3",
            "tlsh": "dfa1779a1566701847b0ebe487275815f55bf6633380c2d4f76ca5981fb71248372efc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-independent-bnpl-navigation/MAL-2026-12962.json"