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#54491of 55,074
3.1Total CVSS
Vulnerabilities · 1
PT-2026-49578
3.1
2026-06-15
Unknown · React Router · CVE-2026-53663
**Name of the Vulnerable Software and Affected Versions** React Router version 7 **Description** Insufficient Cross-Site Request Forgery (CSRF) checks in Framework Mode allow bypasses when using 'PUT', 'PATCH', or 'DELETE' requests, as the checks were primarily applied to 'POST' requests. CSRF is a type of attack where an unauthorized command is transmitted from a user that the web application trusts. This issue is mitigated by modern browser protections such as SameSite cookies and CORS preflight checks. **Recommendations** Update React Router version 7 to a version containing the fix. As a temporary mitigation, avoid using Framework Mode or switch to Declarative Mode (`<BrowserRouter>`) or Data Mode (`createBrowserRouter`/`<RouterProvider>`).