CVE-2026-42342 - React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint

CVE-2026-42342 - React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint

https://cvefeed.io/rssfeed/latest.atom / Tue, 06/02/2026 - 23:27
CVE ID :CVE-2026-42342
Published : June 2, 2026, 8:16 p.m. | 46 minutes ago
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 (``) or Data Mode (`createBrowserRouter/`). This is patched in react-router version 7.15.0 and @remix-run/server-runtime version 2.17.5.
Severity: 7.5 | HIGH
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