CVE-2026-42342
CVE-2026-42342 · React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 7.5 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
react-router
- Versions
- >= 7.0.0, < 7.15.0: Affected
No fix published
@remix-run/server-runtime
- Versions
- >= 2.10.0, < 2.17.5: Affected
No fix published
react-router npm
- Affected ranges
- SEMVER: ≥ 7.0.0, < 7.15.0
Update to 7.15.0
@remix-run/server-runtime npm
- Affected ranges
- SEMVER: ≥ 2.10.0, < 2.17.5
Update to 2.17.5