FKIE_CVE-2026-23869

Vulnerability from fkie_nvd - Published: 2026-04-08 20:16 - Updated: 2026-07-25 11:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through 19.2.4). The vulnerability is triggered by sending specially crafted HTTP requests to Server Function endpoints.The payload of the HTTP request causes excessive CPU usage for up to a minute ending in a thrown error that is catchable.
References
cve-assign@fb.comhttps://github.com/facebook/react/security/advisories/GHSA-479c-33wc-g2pg
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-23869
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2456663
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23869.json
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "react-server-dom-turbopack",
          "vendor": "Meta",
          "versions": [
            {
              "lessThanOrEqual": "19.0.4",
              "status": "affected",
              "version": "19.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "19.1.5",
              "status": "affected",
              "version": "19.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "19.2.4",
              "status": "affected",
              "version": "19.2.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "react-server-dom-parcel",
          "vendor": "Meta",
          "versions": [
            {
              "lessThanOrEqual": "19.0.4",
              "status": "affected",
              "version": "19.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "19.1.5",
              "status": "affected",
              "version": "19.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "19.2.4",
              "status": "affected",
              "version": "19.2.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "react-server-dom-webpack",
          "vendor": "Meta",
          "versions": [
            {
              "lessThanOrEqual": "19.0.4",
              "status": "affected",
              "version": "19.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "19.1.5",
              "status": "affected",
              "version": "19.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "19.2.4",
              "status": "affected",
              "version": "19.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cve-assign@fb.com"
    },
    {
      "affectedData": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_ai"
          ],
          "defaultStatus": "unaffected",
          "packageName": "rhoai/odh-dashboard-rhel9",
          "product": "Red Hat OpenShift AI (RHOAI)",
          "vendor": "Red Hat"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through 19.2.4). The vulnerability is triggered by sending specially crafted HTTP requests to Server Function endpoints.The payload of the HTTP request causes excessive CPU usage for up to a minute ending in a thrown error that is catchable."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de denegaci\u00f3n de servicio existe en los Componentes de Servidor de React, que afecta a los siguientes paquetes: react-server-dom-parcel, react-server-dom-turbopack y react-server-dom-webpack (versiones 19.0.0 a 19.0.4, 19.1.0 a 19.1.5, y 19.2.0 a 19.2.4). La vulnerabilidad se activa al enviar solicitudes HTTP especialmente dise\u00f1adas a los puntos finales de la Funci\u00f3n de Servidor. La carga \u00fatil de la solicitud HTTP causa un uso excesivo de la CPU durante hasta un minuto, terminando en un error lanzado que es capturable."
    }
  ],
  "id": "CVE-2026-23869",
  "lastModified": "2026-07-25T11:10:00.100",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "cve-assign@fb.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-23869",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-08T19:55:33.314236Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-08T20:16:23.003",
  "references": [
    {
      "source": "cve-assign@fb.com",
      "url": "https://github.com/facebook/react/security/advisories/GHSA-479c-33wc-g2pg"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23869"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456663"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23869.json"
    }
  ],
  "sourceIdentifier": "cve-assign@fb.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.