Security Advisory

CVE-2026-42342

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-02 18:23:02

Last updated 2026-06-03 13:52:43

Assigner GitHub_M

CVSS score not scored

State PUBLISHED

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.

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