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CVE-2026-23870

Full vulnerability record from the local CVENow database.

Description

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).

Severity
HIGH
CVSS score
7.5 (v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-05-06 17:16:22.043000
Last modified
2026-10-26 19:10:00.163000
View original CVE JSON
{
  "id": "CVE-2026-23870",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-06T17:16:22.043",
  "lastModified": "2026-10-26T19:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "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)."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de denegación de servicio podría ser activada enviando solicitudes HTTP especialmente diseñadas a los puntos finales de función del servidor, esto podría llevar a caídas del servidor, excepciones por falta de memoria o uso excesivo de CPU; afectando los siguientes paquetes: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versiones 19.0.0 a 19.0.5, 19.1.0 a 19.1.6, y 19.2.0 a 19.2.5)."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Meta",
          "product": "react-server-dom-turbopack",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "19.0.0",
              "lessThanOrEqual": "19.0.5",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "19.1.0",
              "lessThanOrEqual": "19.1.6",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "19.2.0",
              "lessThanOrEqual": "19.2.5",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Meta",
          "product": "react-server-dom-parcel",
          "defaultStatus": "unaffected",
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              "lessThanOrEqual": "19.0.5",
              "versionType": "semver",
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            }
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          "product": "react-server-dom-webpack",
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              "lessThanOrEqual": "19.0.5",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "19.1.0",
              "lessThanOrEqual": "19.1.6",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "19.2.0",
              "lessThanOrEqual": "19.2.5",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-06T19:03:16.700440Z",
          "id": "CVE-2026-23870",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "configurations": [
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          "negate": false,
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  "references": [
    {
      "url": "https://github.com/facebook/react/security/advisories/GHSA-rv78-f8rc-xrxh",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}