What’s Vulnerable › Vulnerabilities

CVE-2025-55008: AuthKit React Router: Sensitive auth data rendered in HTML

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-09 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• workos authkit-react-router: before 0.7.0

References

• https://github.com/workos/authkit-react-router/commit/607caac658784962bab76e227f9c5820d0b9a9e5
• https://github.com/workos/authkit-react-router/releases/tag/v0.7.0
• https://github.com/workos/authkit-react-router/security/advisories/GHSA-vqvc-9q8x-vmq6

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