CVE-2025-55008 Details
Description
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.
A vulnerability in the WorkOS AuthKit library for React Router, affecting versions prior to 0.7.0, allowed sensitive authentication data, specifically the 'sealedSession' and 'accessToken', to be exposed. This data was returned by the 'authkitLoader' and rendered into the browser's HTML, creating a risk of session hijacking, particularly in environments vulnerable to cross-site scripting (XSS) or with certain malicious browser extensions.
Users can update to WorkOS AuthKit for React Router version 0.7.0 or later, where this vulnerability has been fixed. After updating, consult the migration instructions in the README to adjust any implementation that relied on the previous behavior of the 'authkitLoader'.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 9, 2025CISA-ADP
Assessed Aug 11, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/workos/authkit-react-router/commit/607caac658784962bab76e227f9c5820d0b9a9e5 | [email protected] | Source CodeVendor |
| https://github.com/workos/authkit-react-router/releases/tag/v0.7.0 | [email protected] | Release NotesVendor |
| https://github.com/workos/authkit-react-router/security/advisories/GHSA-vqvc-9q8x-vmq6 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| @workos-inc/authkit-react-router | All versions |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Aug 9, 2025 | New CVE Received | [email protected] |