Vulnerability intelligence

CVE-2026-33245

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.

CVSS Score

High

EPSS — Exploit Probability

0.2%

Riskier than 9% of all CVEs

Exploitation

Not in CISA KEV

No federal exploitation record

Remediation

unknown

Check vendor advisories

NVD entry PoC / advisory

1 article across 1 outlet · first covered Jun 4, 2026 · latest Jun 4, 2026

Coverage timeline

Critical React Router Flaws Expose Apps to Remote Code Execution
securityonline.info · Jun 4, 2026