MAL-2026-12946

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-large-bnpl-reviews/MAL-2026-12946.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12946
Published
2026-08-05T14:47:51Z
Modified
2026-08-05T15:51:11.441185758Z
Summary
Malicious code in bnpl-blocks-desktop-large-bnpl-reviews (npm)
Details

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

Source: amazon-inspector (d52a16c390437bd38f791fca1380253d0e4e3056a1b1efd2af35f4fa95e22e28)

On require() of the package, index.js loads bridge.js which detects OS/arch and downloads a platform-specific binary from Cloudflare Workers hosts whose names are reconstructed at runtime by joining split string arrays (e.g. 'oob-wo'+'rker.cf103-070'+'.workers.de'+'v'). If HTTPS mirrors fail, a DNS-TXT covert channel against hosts like sdk.dl.wel1.ru reassembles a base64 payload from a count record plus indexed TXT chunks. The fetched bytes are written to a masquerading path in /var/tmp or %TEMP% (.cache<hex>, dotnetdiag<hex>.exe), chmodded 0755 on POSIX, and spawned detached via cp.spawn('/bin/sh', ['-c', fp+' &'], {detached:true}) or the equivalent cmd invocation on Windows. There is no hash, signature, or publisher verification on the downloaded content. The package presents itself as a 'bnpl blocks' UI component, which does not correspond to fetching and executing an opaque native binary. Destination hosts are non-publisher anonymous workers.dev endpoints and a.ru DNS covert channel.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "d52a16c390437bd38f791fca1380253d0e4e3056a1b1efd2af35f4fa95e22e28",
            "id": "IN-MAL-2026-015445",
            "modified_time": "2026-08-05T14:47:51Z",
            "source": "amazon-inspector",
            "import_time": "2026-08-05T15:19:51.832772684Z",
            "versions": [
                "35.8.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-large-bnpl-reviews

Package

Name
bnpl-blocks-desktop-large-bnpl-reviews
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-desktop-large-bnpl-reviews

Affected ranges

Affected versions

35.*
35.8.2

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "2b9ae09639f88ab2e9591a640c57ba8e9de67ab46f2f2afef7e3b8f9c00d90da",
            "path": "_bridge.js",
            "tlsh": "53a1975a16aa700c8bb0dbe4c71b4416f65af2633380c6d4f75ca9885fb356482b1efc"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-6sAN/Fk8q1h+081wNgW6an8MExT3Yt8EgxMOmIYEonf8efXgas99zyHtvauU7/F8qcYaaYqST7ZnHxhHPZ4lwA==",
                "sha1": "f8c38c8551fe42f094b5e61a26a0ae40bbd69563"
            },
            "filename": "bnpl-blocks-desktop-large-bnpl-reviews-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-blocks-desktop-large-bnpl-reviews/MAL-2026-12946.json"