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CVE-2025-43864

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.

Published

2025-04-25T01:15:43.117

Last Modified

2025-04-29T13:52:28.490

Status

Awaiting Analysis

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses

Type: Secondary
CWE-755

Affected Vendors & Products

References

https://github.com/remix-run/react-router/blob/e6c53a0130559b4a9bd47f9cf76ea5b08a69868a/packages/react-router/lib/server-runtime/server.ts#L407 ([email protected])
https://github.com/remix-run/react-router/commit/c84302972a152d851cf5dd859ff332b354b70111 ([email protected])
https://github.com/remix-run/react-router/security/advisories/GHSA-f46r-rw29-r322 ([email protected])