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CVE-2025-43865GHSA-CPJ6-FHP6-MR6J

React Router allows pre-render data spoofing on React-Router framework mode

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 7.5.2
1 proof of concept on GitHub
  • Exploitation: poc
  • Automatable: yes
  • Technical impact: partial

Summary

React Router is a router for React. In versions on the 7.0 branch prior to version 7.5.2, it's possible to modify pre-rendered data by adding a header to the request. This allows to completely spoof its contents and modify all the values ​​of the data object passed to the HTML. This issue has been patched in version 7.5.2.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • remix-run react-router

    From 7.0 · fixed in 7.5.2

  • react-routernpm

    From 7.0.0-pre.0 · fixed in 7.5.2

References 4

GitHub · remix-run/react-router

GitHub · pouriam23/Pre-render-data-spoofing-on-React-Router-framework-mode-CVE-2025-43865