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NVD
7.5 HighCWE-400
CVE-2026-42342

React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint

remix-runreact-router

Status
  • Not in CISA KEV
Exploit probabilityEPSSchecked 24 Oct
0.3%probability of exploitation in the next 30 days

Higher than 22% of scored CVEs

SeverityCVSS
7.5High

Description NVD

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.

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