AuthKit: 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 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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00411 35th percentileScored 2026-11-07
Fix Fixed authkit-remix (workos): 0.15.0@workos-inc/authkit-remix (npm): 0.15.0
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-remix | before 0.15.0 | 0.15.0 | Patch available | CNA |
| — | @workos-inc/authkit-remix (npm) | before 0.15.0 | 0.15.0 | Patch available | GHSA-v3gr-w9gf-23cx |
- authkit-remix Vendorworkos Affected before 0.15.0 Fixed in 0.15.0 Patch available CNA
- @workos-inc/authkit-remix (npm) Vendor— Affected before 0.15.0 Fixed in 0.15.0 Patch available GHSA-v3gr-w9gf-23cx
Remediation
- Fix · CNA authkit-remix (workos) Fixed in 0.15.0
- Fix · GHSA-v3gr-w9gf-23cx @workos-inc/authkit-remix (npm) Fixed in 0.15.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-55009
- 2026-10-03 Alias added: GHSA-v3gr-w9gf-23cx
References
Other 6
- https://github.com/workos/authkit-remix/security/advisories/GHSA-v3gr-w9gf-23cx
- https://github.com/workos/authkit-remix/commit/20102afc74bf3dd5150a975a098067fb406b90b6
- https://github.com/workos/authkit-remix/releases/tag/v0.15.0
- https://github.com/workos/authkit-remix
- https://osv.dev/vulnerability/CVE-2025-55009
- https://osv.dev/vulnerability/GHSA-v3gr-w9gf-23cx
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-2025-34711 AuthKit React Router: 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-2025-55009 · CVE Program
- CVE-2025-55009 · NVD
- FIRST EPSS
- GHSA-v3gr-w9gf-23cx · 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