FKIE_CVE-2026-21884

Vulnerability from fkie_nvd - Published: 2026-01-10 03:15 - Updated: 2026-01-30 18:19
Severity ?
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Summary
React Router is a router for React. In @remix-run/react version prior to 2.17.3. and react-router 7.0.0 through 7.11.0, a XSS vulnerability exists in in React Router's <ScrollRestoration> API in Framework Mode when using the getKey/storageKey props during Server-Side Rendering which could allow arbitrary JavaScript execution during SSR if untrusted content is used to generate the keys. There is no impact if server-side rendering in Framework Mode is disabled, or if Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>) is being used. This issue has been patched in @remix-run/react version 2.17.3 and react-router version 7.12.0.
References
security-advisories@github.comhttps://github.com/remix-run/react-router/security/advisories/GHSA-8v8x-cx79-35w7Third Party Advisory
Impacted products
Vendor Product Version
shopify react-router *
shopify remix-run\/react *
To clipboard 

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    {
      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "6928DE33-6137-4682-8610-1A6646F1B2A5",
              "versionEndIncluding": "7.11.0",
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              "vulnerable": true
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "React Router is a router for React. In @remix-run/react version prior to 2.17.3. and react-router 7.0.0 through 7.11.0, a XSS vulnerability exists in in React Router\u0027s \u003cScrollRestoration\u003e API in Framework Mode when using the getKey/storageKey props during Server-Side Rendering which could allow arbitrary JavaScript execution during SSR if untrusted content is used to generate the keys. There is no impact if server-side rendering in Framework Mode is disabled, or if Declarative Mode (\u003cBrowserRouter\u003e) or Data Mode (createBrowserRouter/\u003cRouterProvider\u003e) is being used. This issue has been patched in @remix-run/react version 2.17.3 and react-router version 7.12.0."
    },
    {
      "lang": "es",
      "value": "React Router es un router para React. En la versi\u00f3n de @remix-run/react anterior a la 2.17.3 y react-router de la 7.0.0 a la 7.11.0, existe una vulnerabilidad de XSS en la API  de React Router en Modo Framework al usar las props getKey/storageKey durante la Renderizaci\u00f3n del Lado del Servidor, lo que podr\u00eda permitir la ejecuci\u00f3n arbitraria de JavaScript durante SSR si se utiliza contenido no confiable para generar las claves. No hay impacto si la renderizaci\u00f3n del lado del servidor en Modo Framework est\u00e1 deshabilitada, o si se est\u00e1 utilizando el Modo Declarativo () o el Modo de Datos (createBrowserRouter/). Este problema ha sido parcheado en la versi\u00f3n 2.17.3 de @remix-run/react y la versi\u00f3n 7.12.0 de react-router."
    }
  ],
  "id": "CVE-2026-21884",
  "lastModified": "2026-01-30T18:19:22.727",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-10T03:15:48.673",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
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      ],
      "url": "https://github.com/remix-run/react-router/security/advisories/GHSA-8v8x-cx79-35w7"
    }
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  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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