MAL-2026-12910

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-design-system/MAL-2026-12910.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12910
Published
2026-08-05T14:52:13Z
Modified
2026-08-05T15:50:53.735656522Z
Summary
Malicious code in bnpl-blocks-design-system (npm)
Details

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

Source: amazon-inspector (a50b0415c63c49a45364f4a287439682ce2b0d2b95a6fa250e8c01feff20c91f)

On require(), support.js fetches a platform-specific binary from obfuscated hosts assembled by array-join fragments (oob-worker.cf99-9b3.workers.dev mirrors) and, on HTTPS failure, reassembles a base64 payload from TXT records under sdk/ext/pkg/net.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under cover-story names (analyticsstate, dotnetdiag*.exe,.cache_*), chmod 0755 on Unix, and spawned detached via /bin/sh -c or cmd.exe /c start /b. The package advertises itself as a design system but ships no design-system code path that would need to fetch and execute native binaries, and the destination hosts, filenames, and delivery channel are all obfuscated. Any consumer that installs and imports this package executes attacker-controlled code on the installer host at import time.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015475",
            "import_time": "2026-08-05T15:19:53.405050094Z",
            "sha256": "a50b0415c63c49a45364f4a287439682ce2b0d2b95a6fa250e8c01feff20c91f",
            "versions": [
                "35.4.8"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T14:52:13Z"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-design-system

Package

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

Affected ranges

Affected versions

35.*
35.4.8

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-design-system/MAL-2026-12910.json"
indicators 
{
    "evidence_files": [
        {
            "path": "_support.js",
            "tlsh": "78a1a76a16aa70194bb0dbe4c6175416f65af2633780c198fb9c698c1fb351483b2efc",
            "sha256": "8b49acd2abaef8db4610e582210fa77c88315642fa9041ef41df8aa95870c980"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-design-system-35.4.8.tgz",
            "hashes": {
                "sha512_sri": "sha512-v0mvB57vD7qaZJneIFnEADSRJapmGEL7mmha/f/GGwlrkYVUJFcjPMARH/8gfS62oMERbPfp79d5FT8Frv9qZw==",
                "sha1": "7d457da66ef25e0283b7ba302f181c1f8a6b018d"
            }
        }
    ]
}