CVE-2025-55009 HIGH

CVE-2025-55009: AuthKit: Sensitive auth data rendered in HTML

Vendor Workos
Product authkit-remix
Weakness CWE-200 · Info exposure
Published August 9, 2025
Last update August 11, 2025
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 9, 2025 CVE published
August 11, 2025 Record updated