CVE-2026-34077
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Shopify React-router
Shopify React-routerPublishedJun 2, 2026
First seenJun 2, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- shopify react-router7.14.0 or later
- turbo-stream turbo_stream3.0.0 or later
- react-router7.14.0 or later
- turbo-stream3.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| shopify react-router | 7.0.0 ≤ v < 7.14.0 | 7.14.0 |
| turbo-stream turbo_stream | v < 3.0.0 | 3.0.0 |
| react-routernpm | 7.0.0 ≤ v < 7.14.0 | 7.14.0 |
| turbo-streamnpm | v < 3.0.0 | 3.0.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.