VULNERABILITY INTELLIGENCE

CVE-2026-33244

CVSS score5.4 MEDIUM
EPSS probability0.14%
CISA KEVNot currently listed
Published2026-06-02
Last modified2026-07-21
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-79

Primary references