MAL-2026-12997

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-navigation/MAL-2026-12997.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12997
Published
2026-08-05T14:38:40Z
Modified
2026-08-05T15:51:34.685395631Z
Summary
Malicious code in bnpl-blocks-mobile-bnpl-navigation (npm)
Details

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

Source: amazon-inspector (295c0eb6e0491ca81198ae9cbeb921b3658d573f98bd43e82e6bbc0fe953683b)

On require of the package's main, index.js unconditionally loads bootstrap.js, which fetches a platform-specific binary from Cloudflare Workers subdomains whose hostnames are reconstructed at runtime from split string fragments (e.g. 'oob-worker.cf100-416.workers.dev', 'cf103-070.workers.dev', 'cf102-baf.workers.dev'), with a DNS-TXT base64-chunked fallback resolving over sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to a hidden temp path of the form.cache<rand>/dotnetdiag<rand>.exe, chmod 0755 on POSIX, and spawned detached via /bin/sh -c on POSIX or cmd on Windows. There is no hash or signature verification, the destination hosts are obfuscated by string-split concatenation, and lib/telemetry.js exhibits the same reconstruct-fetch-write-chmod-spawn pattern with require("child_" + "process"). The package is presented as 'telemetry', but the code path is an unsigned unpinned remote-code loader that executes attacker-controlled bytes on any machine that installs or requires the package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "295c0eb6e0491ca81198ae9cbeb921b3658d573f98bd43e82e6bbc0fe953683b",
            "id": "IN-MAL-2026-015383",
            "modified_time": "2026-08-05T14:38:40Z",
            "source": "amazon-inspector",
            "import_time": "2026-08-05T15:19:48.411825191Z",
            "versions": [
                "35.3.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-mobile-bnpl-navigation

Package

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

Affected ranges

Affected versions

35.*
35.3.2

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "c6f39c2492b8cc60d87010e71070d82f64574f76177c356a4ec83fb2a183fdb3",
            "path": "_bootstrap.js",
            "tlsh": "9aa1b66a06a670188f70ebe4c71b8416f65bf6633680c284f79c65945f7252883b3efc"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-elJv2okL/DVceAuR5OTRO7Yp+NkJSHP/iWvf0Hnn+Ylbtazde0ayPi9zBsOB1GKJoYP3fzaCtcTRgYtmVSHYbw==",
                "sha1": "404350d69cc7d9b72607a28a68b17a7749fbde0e"
            },
            "filename": "bnpl-blocks-mobile-bnpl-navigation-35.3.2.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-blocks-mobile-bnpl-navigation/MAL-2026-12997.json"