GHSA-rxv8-25v2-qmq8HighCVSS 7.5

React Router vulnerable to Denial of Service via reflected user input in single-fetch

Published
June 4, 2026
Last Modified
June 4, 2026

🔗 CVE IDs covered (1)

📋 Description

A DoS vulnerability exists in the React Router v7 Framework Mode, as well as Remix v2.9.0+ with Single Fetch enabled. In some scenarios the underlying serialization algorithm can become a bottleneck when encoding specific types of data into server responses. Please upgrade to React Router v7.14.0 or later.

[!NOTE] This does not impact your React Router application if you are using Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>).

🎯 Affected products2

  • npm/react-router:>= 7.0.0, < 7.14.0
  • npm/turbo-stream:< 3.0.0

🔗 References (6)