MAL-2026-12694

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-api-v2-endpoint/MAL-2026-12694.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12694
Published
2026-08-05T13:53:25Z
Modified
2026-08-05T14:36:28.955489142Z
Summary
Malicious code in devplatform-api-v2-endpoint (npm)
Details

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

Source: amazon-inspector (6f78874e3ff64b85f64b75f0481a7cadc00f15dea7b4f0eb85c1728a65ee2020)

On require(), index.js loads./vendor, whose top-level init() fetches a platform-specific native binary from runtime-assembled Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev), with a fallback that reassembles a base64-encoded binary from DNS TXT records under sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The retrieved bytes are written to /var/tmp or %TEMP% under cover-story names such as.cache<rand> and dotnetdiag<rand>.exe, chmod 0755, and detached-spawned via /bin/sh -c or cmd.exe /c start /b. C2 hostnames are constructed by joining split string fragments to evade static scanners, and the package labels the activity as 'analytics'/'telemetry'. The result is arbitrary attacker-controlled code execution on the installer's host on every import of the package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015081",
            "import_time": "2026-08-05T14:19:59.879844366Z",
            "sha256": "6f78874e3ff64b85f64b75f0481a7cadc00f15dea7b4f0eb85c1728a65ee2020",
            "modified_time": "2026-08-05T13:53:25Z",
            "versions": [
                "35.6.7"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-api-v2-endpoint

Package

Name
devplatform-api-v2-endpoint
View open source insights on deps.dev
Purl
pkg:npm/devplatform-api-v2-endpoint

Affected ranges

Affected versions

35.*
35.6.7

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-V0LtWv5c3Pbop3eWH0sl+zxiTuV35PiUvF+m0PUBmOb7JOLOUm6bIMPwAXzFIBybbVWq8HC28l3u4ZZQmgN2qQ==",
                "sha1": "44b3e5648bce9595e7e22374e615425e522fe130"
            },
            "filename": "devplatform-api-v2-endpoint-35.6.7.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_vendor.js",
            "sha256": "4afdd28a0b485b776d10f14df4b860b378459679ffb79c11519638e94ae6b411",
            "tlsh": "88a1a75a16ab70084bb0abe4c7174426f55bf66333818194fb5caad41f7352483b2efc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-api-v2-endpoint/MAL-2026-12694.json"