{
  "id": "cve-2025-55182",
  "cveID": "CVE-2025-55182",
  "vendor": "Meta",
  "product": "React Server Components",
  "vulnerabilityName": "Meta React Server Components Remote Code Execution Vulnerability",
  "shortDescription": "Meta React Server Components contains a remote code execution vulnerability that could allow unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints. Please note CVE-2025-66478 has been rejected, but it is associated with CVE-2025- 55182.",
  "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "dateAdded": "2025-12-05",
  "dueDate": "2025-12-12",
  "knownRansomware": true,
  "cwes": [],
  "notes": "Check for signs of potential compromise on all internet accessible REACT instances after applying mitigations. For more information, please see: https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components ; https://github.com/vercel-labs/fix-react2shell-next?tab=readme-ov-file ; https://nvd.nist.gov/vuln/detail/CVE-2025-55182",
  "sources": [
    {
      "label": "NVD",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-55182"
    },
    {
      "label": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    },
    {
      "label": "react.dev",
      "url": "https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components"
    },
    {
      "label": "github.com",
      "url": "https://github.com/vercel-labs/fix-react2shell-next?tab=readme-ov-file"
    },
    {
      "label": "nvd.nist.gov",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-55182"
    }
  ],
  "cvss": {
    "score": 10,
    "severity": "CRITICAL",
    "version": "3.1",
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
  },
  "epss": {
    "score": 0.99802,
    "percentile": 0.99957
  },
  "timeline": [
    {
      "date": "2025-12-05",
      "event": "Added to the CISA KEV catalog"
    },
    {
      "date": "2025-12-12",
      "event": "CISA remediation due date (BOD 22-01)"
    }
  ],
  "status": "past due"
}