CVE-2026-33244
Medium
Description
React Router is a router for React. In versions 7.5.1 through 7.13.1, when using Framework Mode with pre-rendering enabled, improper neutralization of the HTTP `Location` header value can permit Cross-Site Scripting (XSS) in the statically generated HTML files if the redirect location comes from an untrusted source. This does not impact applications using Declarative Mode (`<BrowserRouter>`) or Data Mode (`createBrowserRouter/<RouterProvider>`). This is patched in version 7.13.2.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Shopify React-router
Shopify React-routerPublishedJun 2, 2026
First seenJun 2, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- shopify react-router7.13.2 or later
- react-router7.13.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| shopify react-router | 7.5.1 ≤ v < 7.13.2 | 7.13.2 |
| react-routernpm | 7.5.1 ≤ v < 7.13.2 | 7.13.2 |
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