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CVE-2025-43864

CVE-2025-43864 · React Router allows a DoS via cache poisoning by forcing SPA mode

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · EPSS 20.5% · Public exploit · Fix available

Published
Updated

Stack: node

Affected products and versions

  • react-router

    Versions
    • >= 7.2.0, < 7.5.2: Affected

    No fix published

  • react-router npm

    Affected ranges
    • SEMVER: ≥ 7.2.0, < 7.5.2

    Update to 7.5.2

Original sources

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