{
    "id": "CVE-2025-55182",
    "published": "2025-12-03 16:15:56",
    "last_modified": "2026-08-04 05:16:35",
    "cvss_score": "10.0",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
    "cwe": "CWE-502",
    "description": "A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.",
    "epss_score": "0.99802",
    "epss_percentile": "0.99957",
    "kev": 1,
    "kev_due": "2025-12-12",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:40:00",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2025-12-12."
    },
    "products": [
        {
            "vendor": "facebook",
            "product": "react"
        },
        {
            "vendor": "vercel",
            "product": "next.js"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2025-55182",
        "date_added": "2025-12-05",
        "due_date": "2025-12-12",
        "vendor": "Meta",
        "product": "React Server Components",
        "name": "Meta React Server Components Remote Code Execution Vulnerability",
        "ransomware": 1
    },
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "52506",
            "title": "React Server 19.2.0 - Remote Code Execution",
            "date": "2026-04-09",
            "url": "https://www.exploit-db.com/exploits/52506"
        }
    ],
    "refs_list": [
        "https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components",
        "https://www.facebook.com/security/advisories/cve-2025-55182",
        "http://www.openwall.com/lists/oss-security/2025/12/03/4",
        "https://news.ycombinator.com/item?id=46136026",
        "https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182"
    ]
}