Low severityGHSA Advisory· Published Jun 15, 2026· Updated Jun 15, 2026
React Router: Potential CSRF via PUT/PATCH/DELETE document requests
CVE-2026-53663
Description
Certain CSRF checks in React Router v7 [Framework Mode]() were insufficient and run on POST requests, but were bypassed on PUT/PATCH/DELETE requests. This is a low severity vulnerability because modern browser protections (CORS preflight, SameSite cookies) already block the cross-origin attack vectors that this missing CSRF check would otherwise gate.
> [!NOTE] > This does not impact your React Router application if you are using Declarative Mode (``) or Data Mode (createBrowserRouter/``).
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
react-routernpm | >= 7.12.0, < 7.15.1 | 7.15.1 |
@remix-run/server-runtimenpm | >= 2.17.3, < 2.17.5 | 2.17.5 |
Affected products
5- Range: >= 2.17.3, < 2.17.5
- osv-coords4 versionspkg:apk/chainguard/vitess-24pkg:apk/wolfi/vitess-24pkg:npm/%40remix-run/server-runtimepkg:npm/react-router
< 24.0.1-r4+ 3 more
- (no CPE)range: < 24.0.1-r4
- (no CPE)range: < 24.0.1-r4
- (no CPE)range: >= 2.17.3, < 2.17.5
- (no CPE)range: >= 7.12.0, < 7.15.1
Patches
Vulnerability mechanics
References
2News mentions
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