Authentication Artifact Exposure in Remix by WorkOS
CVE-2025-55009

7.1HIGH

Key Information:

Vendor

Workos

Status
Authkit-remix
Vendor
CVE Published:
9 August 2025

What is CVE-2025-55009?

The AuthKit library for Remix has a vulnerability in versions prior to 0.15.0, where sensitive authentication artifacts, including sealedSession and accessToken, are unintentionally exposed in the browser's HTML. This could lead to unauthorized access, as malicious actors could exploit these artifacts to hijack user sessions. It's crucial for developers to update to the latest version to mitigate this risk and protect user data from potential breaches.

Affected Version(s)

authkit-remix < 0.15.0

References

https://github.com/workos/authkit-remix/security/advisori...
x_refsource_CONFIRM
https://github.com/workos/authkit-remix/commit/20102afc74...
x_refsource_MISC
https://github.com/workos/authkit-remix/releases/tag/v0.15.0
x_refsource_MISC

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-55009 : Authentication Artifact Exposure in Remix by WorkOS