GHSA-h8fp-f39c-q6mhMediumCVSS 6.9

React Router: RSCErrorHandler Missing Protocol Validation (XSS)

Published
July 23, 2026
Last Modified
July 23, 2026

🔗 CVE IDs covered (1)

📋 Description

This is a follow up to https://github.com/remix-run/react-router/security/advisories/GHSA-8646-j5j9-6r62. React Router was alerted of a code path in the (unstable) RSC error handling path in which redirects from untrusted sources could still result in an XSS vector via attacker-supplied redirect targets

[!NOTE] This only affects your application if you are using the unstable RSC APIs

🎯 Affected products1

  • npm/react-router:>= 7.11.0, < 7.18.0

🔗 References (6)