CVE-2026-33244

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.

PUBLISHED Reserved 2026-03-18 | Published 2026-06-02 | Updated 2026-06-02 | Assigner GitHub_M

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

References

github.com/...router/security/advisories/GHSA-f22v-gfqf-p8f3

cve.org (CVE-2026-33244)

nvd.nist.gov (CVE-2026-33244)

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