Vulnerability · Published Aug 9, 2025 · Assigned by GitHub_M

CVE-2025-55009AuthKit: Sensitive auth data rendered in HTML

High 7.1

In plain English

A high-severity information exposure in authkit-remix from workos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.4%top 64.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	@workos-inc/authkit-remix	0.15.0	GHSA-v3gr-w9gf-23cx

Affected products (as reported)

Vendor	Product	Versions
workos	authkit-remix	< 0.15.0

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

References

https://github.com/workos/authkit-remix/security/advisories/GHSA-v3gr-w9gf-23cx x_refsource_CONFIRM
https://github.com/workos/authkit-remix/commit/20102afc74bf3dd5150a975a098067fb406b90b6 x_refsource_MISC
https://github.com/workos/authkit-remix/releases/tag/v0.15.0 x_refsource_MISC