CVE-2025-55009: Workos Authkit-Remix

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

The AuthKit library for Remix provides convenient helpers for authentication and session management using WorkOS & AuthKit with Remix. In versions 0.14.1 and below, @workos-inc/authkit-remix exposed sensitive authentication artifacts — specifically sealedSession and accessToken — by returning them from the authkitLoader. This caused them to be rendered into the browser HTML.

Affected products

• Workos Authkit-Remix: before 0.15.0 (fixed in 0.15.0)

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