CVE-2026-53667

Updated on 27 Jul 2026

Severity

6.9 Medium severity

Details

CVSS score
6.9
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Overview

About vulnerability

React Router is a router for React. In versions 7.11.0 through 7.17.0, the RSCErrorHandler is missing protocol validation, allowing for redirects from untrusted sources. This issue is a follow up to CVE-2026-53667, and only affects consuming applications if they are using the unstable RSC APIs. This issue has been fixed in version 7.18.0.

Details

Affected packages:
@react-router/dev @ 7.17.0 (+54 more)