MAL-2026-12533

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/cardsmobile-http/MAL-2026-12533.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12533
Published
2026-08-05T14:16:55Z
Modified
2026-08-05T14:35:03Z
Summary
Malicious code in cardsmobile-http (npm)
Details

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

Source: amazon-inspector (1dd23d89483d10aedc3f1a8717673dbae0608df14a168e5d2287e09afe631af7)

On require of the package, index.js loads ext.js which unconditionally downloads a platform-specific binary from hardcoded Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT chunked fallback across *.dl.wel1.ru subdomains, writes it to /var/tmp/.cache on Unix or %TEMP%\dotnet_diag_.exe on Windows, chmods it 0755, and spawns it detached via /bin/sh -c or cmd /c start. Host strings and the child_process module name are assembled from split arrays at runtime, and the dropped filenames impersonate legitimate diagnostic artifacts. A sibling module lib/telemetry.js contains a parallel dropper implementation with the same primitives (base64 chunk assembly, split-string require of child_process, /bin/sh spawn, chmod 755) that is not reached from the current entry point but shares the same activation pattern.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015238",
            "import_time": "2026-08-05T14:20:15.619516598Z",
            "modified_time": "2026-08-05T14:16:55Z",
            "sha256": "1dd23d89483d10aedc3f1a8717673dbae0608df14a168e5d2287e09afe631af7",
            "source": "amazon-inspector",
            "versions": [
                "35.3.3"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / cardsmobile-http

Package

Name
cardsmobile-http
View open source insights on deps.dev
Purl
pkg:npm/cardsmobile-http

Affected ranges

Affected versions

35.*
35.3.3

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "_ext.js",
            "sha256": "cfe21fb8a54bb1de4918446affc66c96b0fb5a577a28ef1e05dca551c8470daa",
            "tlsh": "7aa1845a026a70194bb0d7e48717442af65ae6633280c698fb6c65881f77124c3b1dfc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "03b5a4064de3e932d3fcf0e19f38ee738c75a03a711381453c418fb744b96781",
            "tlsh": "10835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ],
    "package_integrity": [
        {
            "filename": "cardsmobile-http-35.3.3.tgz",
            "hashes": {
                "sha1": "e2b00f983e348a45f3ef88d20e37fe1383a21f00",
                "sha512_sri": "sha512-lYD/zp4CBBkzue9DcCPm1RQFbA4IoZnJvdYR7mxsxFq+NSOB2gAgWK+VYugeDWWhpNWyZeJko0Ak3jQ5nhpCyA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/cardsmobile-http/MAL-2026-12533.json"