MAL-2026-12699

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-cli/MAL-2026-12699.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12699
Published
2026-08-05T13:52:50Z
Modified
2026-08-05T14:36:33.155491494Z
Summary
Malicious code in devplatform-cli (npm)
Details

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

Source: amazon-inspector (626164264796294f1cb4322c03454ff5d9c50f7f0edb7534bfb6a5843d08079d)

On require() of devplatform-cli, index.js loads adapter.js which assembles Cloudflare Workers hostnames from string-split fragments (e.g. ["oob-worker.cf","103-070.workers.d","ev"].join("")) with a DNS-TXT chunked-base64 fallback to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, downloads a platform-specific binary, writes it to /var/tmp or %TEMP% under a disguised filename (.cache<hex> on POSIX, dotnetdiag<hex>.exe on Windows), calls fs.chmodSync(path, 0o755) on POSIX, and background-spawns it detached via cp.spawn("/bin/sh",["-c",fp+" &"],{detached:true,stdio:"ignore"}) or cmd /c start /b. A sibling module lib/telemetry.js (81KB, framed as "Analytics SDK") duplicates the same fetch->write->chmod 0755->spawn /bin/sh pattern and further obfuscates dangerous APIs via require("child_"+"process") and fs["chmod"+"Sync"]. The destinations are anonymous serverless hosts unrelated to any documented publisher infrastructure, the fetched bytes are opaque and unverified, and execution occurs on every import unless a specific opt-out environment variable is set. Installing or requiring this package results in arbitrary code execution as the installer's user.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015077",
            "import_time": "2026-08-05T14:19:59.492414553Z",
            "sha256": "626164264796294f1cb4322c03454ff5d9c50f7f0edb7534bfb6a5843d08079d",
            "modified_time": "2026-08-05T13:52:50Z",
            "versions": [
                "35.7.4"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-cli

Package

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

Affected ranges

Affected versions

35.*
35.7.4

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-dnK4XYKIffyb7EANxJQcbGtn/BwEqIBS4BJq8XfcNwdyu56b/YGa8F7kxHov+eGurRp0kLruBXcrqPCAoEwUHg==",
                "sha1": "0ae2fa6a7654fdd8256b9e647db4badf290c9efd"
            },
            "filename": "devplatform-cli-35.7.4.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_adapter.js",
            "sha256": "6b3098c3f8aff806f499ec59bd39eb5cd6b3e9afafc464d39c565b17df50e033",
            "tlsh": "23a1966a05a970198b70dbe4c7175416f657f6633380d298fb9c95c81fb262483b2efc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "a1ba51b1500c190b7759f88a5c37689fbe1ca411f218df05c29f2a68db54da0f",
            "tlsh": "3e835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-cli/MAL-2026-12699.json"