remix-run/react-router · Security
React Router vulnerable to XSS in unstable RSC redirect handling via javascript: redirect targets
- GHSA ID
- GHSA-8646-j5j9-6r62
- CVE ID
- CVE-2026-33245
- Severity
- high
- Published
- Updated
- CVSS
- 8 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
- CVSS v3
- 8 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Description
When using React Router v7's unstable RSC APIs, there exists a potential client-side XSS issue in the RSC redirect handling if redirects are coming from untrusted sources
[!NOTE] This only impacts your application if you are using the unstable RSC APIs in React Router.
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')