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CVE CVE-2026-34077

CVE-2026-34077

React

Severity: HIGH
CVSS: 7.5CVSS
Published: 2026-06-02
Last modified: 2026-06-02
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-770

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.

References

https://github.com/remix-run/react-router/security/advisories/GHSA-rxv8-25v2-qmq8

Summary

Description

References