CVE-2025-43864CWE-755

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

High · published April 25, 2025

CVSS v3.1
7.5
EPSS
20%
Percentile
97.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.20475 · 97.5th percentile
Weakness
CWE-755 · Improper Handling of Exceptional Conditions
Published
2025-04-25T00:18Z
EPSS history
Timeline
  • 25 APR 00:18Z
    React Router allows a DoS via cache poisoning by forcing SPA mode
    cvelistv5