Packages / react-router / Security

HighVulnerabilityGHSA-8646-j5j9-6r62CVE-2026-33245Published 3 Jun 2026

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

Affected releases · react-router

  • 7.x7.7.0 – 7.13.1Fixed in 7.13.2

On 7.x, the newest line:

npm install react-router@7.13.2
8.x

  1. Not affected

    8.0.0 – 8.5.0

    8 releases, latest

7.x

  1. Not affected

    7.0.0 – 7.6.3

    21 releases

  2. Affected

    7.7.0 – 7.13.1

    18 releases

  3. Fixed

    7.13.2 – 7.18.4

    13 releases

228 stable releases of react-router, oldest to newest, one row per major.

Is your project affected?

Paste your package.json, or type the range you declare for react-router. It is read in your browser and sent nowhere.

What happens

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.