Vulnerability Intelligence Report
React Router allows pre-render data spoofing on React-Router framework mode
CVE-2025-43865
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.
No Active Exploit Signals
CVSS Base Score
8.2
HIGH
Exploitability:3.9
Impact Score:4.3
EPSS Probability:0.74%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Weaknesses (CWE)
CWE-345 ↗CWE-345: Insufficient Verification of Data Authenticity
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| remix-run | react-router | >= 7.0, < 7.5.2 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.737%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2025-04-17T20:07:08 |
| Published | 2025-04-25T00:18:53 |
| Last Updated | 2025-04-25T15:16:00 |
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