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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2025-43864

React Router allows a DoS via cache poisoning by forcing SPA mode

Description

React Router is a router for React. Starting in version 7.2.0 and prior to version 7.5.2, it is possible to force an application to switch to SPA mode by adding a header to the request. If the application uses SSR and is forced to switch to SPA, this causes an error that completely corrupts the page. If a cache system is in place, this allows the response containing the error to be cached, resulting in a cache poisoning that strongly impacts the availability of the application. This issue has been patched in version 7.5.2.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

remix-run react-router

  • >= 7.2.0, < 7.5.2affected

References