MAL-2026-13544

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-eslint-config/MAL-2026-13544.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13544
Published
2026-08-07T12:25:53Z
Modified
2026-08-07T13:20:24.256200501Z
Summary
Malicious code in devplatform-eslint-config (npm)
Details

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

Source: amazon-inspector (de0fcdb30a4308ee477f432e1bcc665e8ee45f3dd36dd02f22089a4b9e2a69f9)

devplatform-eslint-config@35.8.9 ships no ESLint configuration despite its name and description. Requiring the package loads compat.js, which on import selects a payload path based on OS/architecture (linuxx64, linuxarm64, darwin, win32), fetches an opaque native binary over HTTPS from a rotating set of Cloudflare Workers hosts whose names are assembled at runtime by joining split string fragments (oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS-TXT covert-channel fallback that reassembles base64 chunks from TXT records under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to a temporary path with a decoy filename (e.g. dotnetdiag_*.exe,.cache_*), chmod 0755, and executed via a detached child process (cp.spawn('/bin/sh',['-c', fp+' &'], {detached:true}) on POSIX, cmd.exe start /b on Windows). lib/telemetry.js contains duplicate fetch-write-chmod-spawn primitives. Runtime string assembly of C2 hostnames hides destinations from static analysis, and the ESLint-config identity is a cover story unrelated to the shipped code.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-07T12:51:20.612862599Z",
            "id": "IN-MAL-2026-016977",
            "versions": [
                "35.8.9"
            ],
            "source": "amazon-inspector",
            "sha256": "de0fcdb30a4308ee477f432e1bcc665e8ee45f3dd36dd02f22089a4b9e2a69f9",
            "modified_time": "2026-08-07T12:25:53Z"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-eslint-config

Package

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

Affected ranges

Affected versions

35.*
35.8.9

Database specific

indicators 
{
    "evidence_files": [
        {
            "path": "_compat.js",
            "tlsh": "1ba1955a156670088bb0dbe4c7175416f6abf6632780c298fb6ca5884fb356883b1dfc",
            "sha256": "ade3278944e896438532b00f202ac4ff11cfda4c4c050a45e698e4d9840cec94"
        },
        {
            "path": "package.json",
            "tlsh": "b3c02223c120ac2301b01d41dce119273ba21f1f10229c0eb673321c02e457100de312",
            "sha256": "70413de21a15d2f160031a45559fcab67a72a1c18051d5bd8488f4a89328ecee"
        }
    ],
    "package_integrity": [
        {
            "filename": "devplatform-eslint-config-35.8.9.tgz",
            "hashes": {
                "sha1": "58c61da62d23635c70d38c1ea2572b1e58ec5ad1",
                "sha512_sri": "sha512-N3IsQYzwLm4iDrfO8WGGSEnrsuzN+nDBndiNXNOFxOzlbAC8tOaQk8F4/QW8shIwOLV0xTaCfKi+eAu4amCBNg=="
            }
        }
    ]
}
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-eslint-config/MAL-2026-13544.json"