CVE-2026-21884

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.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*
cpe:2.3:a:shopify:remix-run\/react:*:*:*:*:*:node.js:*:*

History

30 Jun 2026, 03:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:19712 -
  • () https://access.redhat.com/errata/RHSA-2026:3782 -
  • () https://access.redhat.com/errata/RHSA-2026:3958 -
  • () https://access.redhat.com/errata/RHSA-2026:3960 -
  • () https://access.redhat.com/security/cve/CVE-2026-21884 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2428421 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21884.json -

17 Jun 2026, 10:19

Type Values Removed Values Added
Summary
  • (es) React Router es un router para React. En la versión 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 Renderización del Lado del Servidor, lo que podría permitir la ejecución arbitraria de JavaScript durante SSR si se utiliza contenido no confiable para generar las claves. No hay impacto si la renderización del lado del servidor en Modo Framework está deshabilitada, o si se está utilizando el Modo Declarativo () o el Modo de Datos (createBrowserRouter/). Este problema ha sido parcheado en la versión 2.17.3 de @remix-run/react y la versión 7.12.0 de react-router.

30 Jan 2026, 18:19

Type Values Removed Values Added
References () https://github.com/remix-run/react-router/security/advisories/GHSA-8v8x-cx79-35w7 - () https://github.com/remix-run/react-router/security/advisories/GHSA-8v8x-cx79-35w7 - Third Party Advisory
First Time Shopify
Shopify react-router
Shopify remix-run\/react
CPE cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*
cpe:2.3:a:shopify:remix-run\/react:*:*:*:*:*:node.js:*:*

10 Jan 2026, 03:15

Type Values Removed Values Added
New CVE

Information

Published : 2026-01-10 03:15

Updated : 2026-07-15 02:18


NVD link : CVE-2026-21884

Mitre link : CVE-2026-21884

CVE.ORG link : CVE-2026-21884


JSON object : View

Products Affected

shopify

  • react-router
  • remix-run\/react
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')