High severity8.0NVD Advisory· Published Jun 2, 2026· Updated Jun 4, 2026
CVE-2026-33245
CVE-2026-33245
Description
React Router is a router for React. In versions 7.7.0 through 7.13.1, when using React Router's unstable React Server Components (RSC) APIs, there is a potential client-side Cross-Site Scripting (XSS) vulnerability in the RSC redirect handling if redirects come from untrusted sources. This does not impact applications that are not using the unstable RSC APIs in React Router. This is patched in version 7.13.2.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
react-routernpm | >= 7.7.0, < 7.13.2 | 7.13.2 |
Affected products
2- Range: 7.7.0 - 7.13.1
Patches
Vulnerability mechanics
References
3- github.com/advisories/GHSA-8646-j5j9-6r62ghsaADVISORY
- github.com/remix-run/react-router/security/advisories/GHSA-8646-j5j9-6r62nvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-33245ghsaADVISORY
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