CVE-2026-33245

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

Published Jun 2, 2026 CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8646-j5j9-6r62 React Router vulnerable to XSS in unstable RSC redirect handling via javascript: redirect targets
History
Type Values Removed Values Added
First Time appeared Shopify
Shopify react-router
CPEs cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*
Vendors & Products Shopify
Shopify react-router
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Remix-run
Remix-run react-router
Vendors & Products Remix-run
Remix-run react-router
Type Values Removed Values Added
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.
Title React Router vulnerable to XSS in unstable RSC redirect handling via javascript: redirect targets
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 3, 2026, 7:09 PM
Reserved
Mar 18, 2026, 2:42 AM
Status
Analyzed
Published
Jun 2, 2026, 8:16 PM
Modified
Jul 22, 2026, 7:10 PM
Severity
Moderate
Public date
Jun 2, 2026, 5:14 PM