CVE-2026-42342
Description
React Router is a router for React. In versions 7.0.0 through 7.14.x of react-router and versions 2.10.0 through 2.17.4 of @remix-run/server-runtime, certain crafted requests can consume disproportionate server resources via unbounded path expansion in the __manifest endpoint, resulting in response time degradation and/or service unavailability for end users. This affects React Router Framework Mode applications as well as Remix applications. This does not impact applications using Declarative Mode (`<BrowserRouter>`) or Data Mode (`createBrowserRouter/<RouterProvider>`). This is patched in react-router version 7.15.0 and @remix-run/server-runtime version 2.17.5.
Shopify React-routerHow to fix
- shopify react-router7.15.0 or later
- shopify remix-run\/server-runtime2.17.5 or later
- react-router7.15.0 or later
- @remix-run/server-runtime2.17.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| shopify react-router | 7.0.0 ≤ v < 7.15.0 | 7.15.0 |
| shopify remix-run\/server-runtime | 2.10.0 ≤ v < 2.17.5 | 2.17.5 |
| react-routernpm | 7.0.0 ≤ v < 7.15.0 | 7.15.0 |
| @remix-run/server-runtimenpm | 2.10.0 ≤ v < 2.17.5 | 2.17.5 |
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Attack Surface Management
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