CVE-2025-55008 – @workos-inc/authkit-react-router

Package

Manager: npm
Name: @workos-inc/authkit-react-router
Vulnerable Version: >=0 <0.7.0

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

EPSS: 0.00069 pctl0.21736

Details

The AuthKit React Router Library rendered sensitive auth data in HTML In versions before `0.7.0`, `@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. ### Impact This information disclosure could lead to session hijacking in environments where cross-site scripting (XSS), malicious browser extensions, or local inspection is possible. ### Patches Patched in [https://github.com/workos/authkit-react-router/releases/tag/v0.7.0](https://github.com/workos/authkit-react-router/releases/tag/v0.7.0) In patched versions: - `sealedSession` and `accessToken` are no longer returned by default from the `authkitLoader`. - A secure server-side mechanism is provided to fetch an access token as needed.

Metadata

Created: 2025-08-08T17:04:11Z
Modified: 2025-08-11T13:57:10Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-vqvc-9q8x-vmq6/GHSA-vqvc-9q8x-vmq6.json
CWE IDs: ["CWE-200"]
Alternative ID: GHSA-vqvc-9q8x-vmq6
Finding: F017
Auto approve: 1