CVE-2026-23870

Estado: AnalizadaAlta (7.5)—

A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.5, 19.1.0 through 19.1.6, and 19.2.0 through 19.2.5).

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 1.53%
Percentil entre todas las CVEs puntuadas: 74
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access90 %
Impacto principalT1499.004 Application or System Exploitationimpact85 %

Vector CVSS AV:N/AC:L/PR:N sin UI indica acceso remoto sin privilegios (T1190). CWE-400 y descripción de crashes/DoS confirman T1499.004 (ataque de aplicación).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Tecnologías afectadas (3)

Facebook — React-server-dom-parcel Facebook — React-server-dom-turbopack Facebook — React-server-dom-webpack

CWE

CWE-400

Referencias

https://github.com/facebook/react/security/advisories/GHSA-rv78-f8rc-xrxh

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-23870",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-23870",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-06T19:03:16.700440Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve-assign@fb.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve-assign@fb.com",
      "affectedData": [
        {
          "vendor": "Meta",
          "product": "react-server-dom-turbopack",
          "versions": [
            {
              "status": "affected",
              "version": "19.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "19.0.5"
            },
            {
              "status": "affected",
              "version": "19.1.0",
              "versionType": "semver",
              "lessThanOrEqual": "19.1.6"
            },
            {
              "status": "affected",
              "version": "19.2.0",
              "versionType": "semver",
              "lessThanOrEqual": "19.2.5"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Meta",
          "product": "react-server-dom-parcel",
          "versions": [
            {
              "status": "affected",
              "version": "19.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "19.0.5"
            },
            {
              "status": "affected",
              "version": "19.1.0",
              "versionType": "semver",
              "lessThanOrEqual": "19.1.6"
            },
            {
              "status": "affected",
              "version": "19.2.0",
              "versionType": "semver",
              "lessThanOrEqual": "19.2.5"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Meta",
          "product": "react-server-dom-webpack",
          "versions": [
            {
              "status": "affected",
              "version": "19.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "19.0.5"
            },
            {
              "status": "affected",
              "version": "19.1.0",
              "versionType": "semver",
              "lessThanOrEqual": "19.1.6"
            },
            {
              "status": "affected",
              "version": "19.2.0",
              "versionType": "semver",
              "lessThanOrEqual": "19.2.5"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-05-06T17:16:22.043",
  "references": [
    {
      "url": "https://github.com/facebook/react/security/advisories/GHSA-rv78-f8rc-xrxh",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve-assign@fb.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.5, 19.1.0 through 19.1.6, and 19.2.0 through 19.2.5)."
    }
  ],
  "lastModified": "2026-08-12T15:51:57.517",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:facebook:react-server-dom-parcel:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A1678B87-ED02-4BF8-A08C-A87759FDFAEC",
              "versionEndIncluding": "19.0.5",
              "versionStartIncluding": "19.0.0"
            },
            {
              "criteria": "cpe:2.3:a:facebook:react-server-dom-parcel:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D6962C45-D7EC-4DF0-B9C6-DB96A84384FA",
              "versionEndIncluding": "19.1.6",
              "versionStartIncluding": "19.1.0"
            },
            {
              "criteria": "cpe:2.3:a:facebook:react-server-dom-parcel:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "640841EA-DA32-4459-9F6A-FCAC50E3D446",
              "versionEndIncluding": "19.2.5",
              "versionStartIncluding": "19.2.0"
            },
            {
              "criteria": "cpe:2.3:a:facebook:react-server-dom-turbopack:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B1F8B3DF-589C-4CEC-9BD6-854B23406AF0",
              "versionEndIncluding": "19.0.5",
              "versionStartIncluding": "19.0.0"
            },
            {
              "criteria": "cpe:2.3:a:facebook:react-server-dom-turbopack:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "532D814C-29FF-400A-971F-49C16C6AA131",
              "versionEndIncluding": "19.1.6",
              "versionStartIncluding": "19.1.0"
            },
            {
              "criteria": "cpe:2.3:a:facebook:react-server-dom-turbopack:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "385AECA1-DEF6-4349-9BFD-807B071740F1",
              "versionEndIncluding": "19.2.5",
              "versionStartIncluding": "19.2.0"
            },
            {
              "criteria": "cpe:2.3:a:facebook:react-server-dom-webpack:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AA8882E3-789E-4A7B-B47E-6286F60F719E",
              "versionEndIncluding": "19.0.5",
              "versionStartIncluding": "19.0.0"
            },
            {
              "criteria": "cpe:2.3:a:facebook:react-server-dom-webpack:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BB14FFF9-8903-4AAC-A563-B498394C75C0",
              "versionEndIncluding": "19.1.6",
              "versionStartIncluding": "19.1.0"
            },
            {
              "criteria": "cpe:2.3:a:facebook:react-server-dom-webpack:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7A563960-4696-481F-8BAB-5A437AB5F14A",
              "versionEndIncluding": "19.2.5",
              "versionStartIncluding": "19.2.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve-assign@fb.com"
}