What’s Vulnerable › Vulnerabilities

CVE-2025-55009: AuthKit: 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 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.

Affected products

• workos authkit-remix: before 0.15.0

References

• 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/security/advisories/GHSA-v3gr-w9gf-23cx

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