CVE-2026-33244

5.4 MEDIUM

React Router is a router for React

Published: 2026-06-02 · Last updated: 2026-06-03

Severity and scoring

CVSS: 5.4 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CWE: CWE-79

Affected products

Vendor	Product
shopify	react-router

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-33244
[Vendor advisory]https://github.com/remix-run/react-router/security/advisories/GHSA-f22v-gfqf-p8f3

Related CVEs

Same vendor

CVE-2026-42342 — React Router is a router for React (7.5 HIGH)
CVE-2026-42211 — React Router is a router for React (8.1 HIGH)
CVE-2026-40181 — React Router is a router for React (6.1 MEDIUM)
CVE-2026-34077 — React Router is a router for React (7.5 HIGH)
CVE-2026-33245 — React Router is a router for React (8.0 HIGH)

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