PT-2026-45799 · Remix Run · React Router

Published 2026-06-02 · Updated 2026-06-02 · CVE-2026-33244

Mitre

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-33244

Affected Products

React Router

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-33244 · Security Note
• https://github.com/remix-run/react-router/security/advisories/GHSA-f22v-gfqf-p8f3 · Note