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OpenAdvisories
High · 8.0 CVE-2026-33245 EUVD-2026-33988GHSA-8646-j5j9-6r62

React Router vulnerable to XSS in unstable RSC redirect handling via javascript: redirect targets

Published Jun 2, 2026 · Updated Jun 3, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
remix-run react-router >= 7.7.0, < 7.13.2 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Tumbleweed agama-web-ui 24+0.a836cced5-52.1 openSUSE-SU-2026:11680-1

Affected packages

EcosystemPackageAffectedFixedRecord
npm react-router >= 7.7.0, < 7.13.2 7.13.2 GHSA-8646-j5j9-6r62

Advisories 1

References