CVE-2025-55008: Workos Authkit-React-Router

High severity, CVSS 7.1. EPSS: 0.4% chance of exploitation in the next 30 days.

The AuthKit library for React Router 7+ provides helpers for authentication and session management using WorkOS & AuthKit with React Router. In versions 0.6.1 and below, @workos-inc/authkit-react-router exposed sensitive authentication artifacts — specifically sealedSession and accessToken by returning them from the authkitLoader. This caused them to be rendered into the browser HTML. This issue is fixed in version 0.7.0.

Affected products

• Workos Authkit-React-Router: before 0.7.0 (fixed in 0.7.0)

Published 2025-08-09. Last modified 2026-06-17.