CVE-2025-55008 json
AuthKit React Router: Sensitive auth data rendered in HTML
published 2025-08-08 15 mo ago modified 2026-06-17 4 mo ago also GHSA-vqvc-9q8x-vmq6 , EUVD-2025-24029
- cvss
- 7.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
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.
Patch / fix
- npm @workos-inc/authkit-react-router 0.7.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 14 mo ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L |
| GitHub | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @workos-inc/authkit-react-router | <0.7.0 |
0.7.0 |
Affected products
- workos authkit-react-router
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
github.com
/workos/authkit-react-router/commit/607caac658784962bab76e227f9c5820d0b9a9e5
web
-
github.com
/workos/authkit-react-router/security/advisories/GHSA-vqvc-9q8x-vmq6
web
-
github.com
/workos/authkit-react-router/releases/tag/v0.7.0
web
-
nvd.nist.gov
/vuln/detail/CVE-2025-55008
advisory
-
github.com
/workos/authkit-react-router
package
Sources
- CVE List CVE-2025-55008
- GitHub Advisory GHSA-vqvc-9q8x-vmq6
- NVD CVE-2025-55008
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