{
    "id": "CVE-2018-6342",
    "published": "2018-12-31 22:29:00",
    "last_modified": "2026-06-17 02:01:42",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-78",
    "description": "react-dev-utils on Windows allows developers to run a local webserver for accepting various commands, including a command to launch an editor. The input to that command was not properly sanitized, allowing an attacker who can make a network request to the server (either via CSRF or by direct request) to execute arbitrary commands on the targeted system. This issue affects multiple branches: 1.x.x prior to 1.0.4, 2.x.x prior to 2.0.2, 3.x.x prior to 3.1.2, 4.x.x prior to 4.2.2, and 5.x.x prior to 5.0.2.",
    "epss_score": "0.02845",
    "epss_percentile": "0.86319",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-11 18:17:19",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "facebook",
            "product": "react-dev-utils"
        },
        {
            "vendor": "microsoft",
            "product": "windows"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://github.com/facebook/create-react-app/pull/4866",
        "https://github.com/facebook/create-react-app/releases/tag/v1.1.5",
        "https://github.com/facebook/create-react-app/pull/4866",
        "https://github.com/facebook/create-react-app/releases/tag/v1.1.5"
    ]
}