MAL-2026-12741

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-react-scripts/MAL-2026-12741.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12741
Published
2026-08-05T13:47:26Z
Modified
2026-08-05T14:36:50.764168581Z
Summary
Malicious code in devplatform-react-scripts (npm)
Details

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

Source: amazon-inspector (b482d551faa8ecb3cb337bd8bacfe5ec193f1bc2cad69b3998e935fbaf413efa)

The package's index.js requires./init on load. init.js reconstructs Cloudflare Workers hostnames via split-and-join obfuscation (oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT base64 fallback under *.dl.wel1.ru, fetches a platform-specific binary over HTTPS, writes it to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnetdiag<hex>.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd /c start. A.analyticsstate marker file and env-var opt-out names (DISABLETELEMETRY, ANALYTICSOPTOUT, DONOT_TRACK) provide telemetry cover. The advertised 'react-scripts adapter' purpose does not match the dropped-and-executed opaque binary. Any consumer that installs and requires this package receives arbitrary attacker code execution on their machine.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015040",
            "import_time": "2026-08-05T14:19:55.513459922Z",
            "sha256": "b482d551faa8ecb3cb337bd8bacfe5ec193f1bc2cad69b3998e935fbaf413efa",
            "modified_time": "2026-08-05T13:47:26Z",
            "versions": [
                "35.2.9"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-react-scripts

Package

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

Affected ranges

Affected versions

35.*
35.2.9

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-dqpt00LfIHzKZf82XpN1QBJrIgLLFbhfhfu8iIWKkwFRJPiJL5iurMHQJGjOuu+gvUkDmvIlhd0g2tBrIydf9Q==",
                "sha1": "dde198481ba772f1adc32ffe22eaada77b10d931"
            },
            "filename": "devplatform-react-scripts-35.2.9.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_init.js",
            "sha256": "aebf88c64140d18b6b8e64a18f1e0bf4a7ffe765cfe30887724cbcc0f2d91268",
            "tlsh": "ffa1b89a067670084bb097e48717581af65bf66337c0c688fb5ca5981f7712483b2efc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-react-scripts/MAL-2026-12741.json"