AuthKit React Router: Sensitive auth data rendered in HTML
Priority LOW 31CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00411 35th percentileScored 2026-11-07
Fix Fixed authkit-react-router (workos): 0.7.0@workos-inc/authkit-react-router (npm): 0.7.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| workos | authkit-react-router | before 0.7.0 | 0.7.0 | Patch available | CNA |
| — | @workos-inc/authkit-react-router (npm) | before 0.7.0 | 0.7.0 | Patch available | GHSA-vqvc-9q8x-vmq6 |
- authkit-react-router Vendorworkos Affected before 0.7.0 Fixed in 0.7.0 Patch available CNA
- @workos-inc/authkit-react-router (npm) Vendor— Affected before 0.7.0 Fixed in 0.7.0 Patch available GHSA-vqvc-9q8x-vmq6
Remediation
- Fix · CNA authkit-react-router (workos) Fixed in 0.7.0
- Fix · GHSA-vqvc-9q8x-vmq6 @workos-inc/authkit-react-router (npm) Fixed in 0.7.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-55008
- 2026-10-03 Alias added: GHSA-vqvc-9q8x-vmq6
References
More workos vulnerabilities
- TI-2025-40100 authkit-nextjs may let session cookies be cached in CDNs CVSS 4.0HIGH 8.0
- TI-2024-19668 @workos-inc/authkit-nextjs session replay vulnerability CVSS 3.1HIGH 8.1
- TI-2025-34712 AuthKit: Sensitive auth data rendered in HTML CVSS 3.1HIGH 7.1
- TI-2025-16829 Authentication bypass in workos Hosted AuthKit CVSS 3.1MEDIUM 6.0
- TI-2026-30845 @workos/authkit-session: Open Redirect via state-derived redirect target CVSS 3.1MEDIUM 4.3
- TI-2024-34658 Refresh tokens are logged when the debug flag is enabled in @workos-inc/authkit-remix CVSS 4.0LOW 2.1
Sources
- CVE-2025-55008 · CVE Program
- CVE-2025-55008 · NVD
- FIRST EPSS
- GHSA-vqvc-9q8x-vmq6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences