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EUVD-2026-249396

2026-10-07T03:13:42.347331+00:00

EUVD-2026-249396

fkie_cve-2025-55009

2026-10-07T03:13:42.347368+00:00

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.

GHSA-v3gr-w9gf-23cx — The AuthKit Remix Library renders sensitive auth data in HTML

2026-10-07T03:13:42.347404+00:00

Affected: npm: @workos-inc/authkit-remix

### Summary

Before `0.15.0`, `@workos-inc/authkit-remix` returned sensitive authentication artifacts from the `authkitLoader`, specifically `sealedSession` and `accessToken`. Because these values were returned from the loader, they were embedded into the server-rendered HTML and became readable by any script with access to the page’s DOM (e.g., in the presence of XSS or a malicious browser extension).

* **Impact:** Exposure of these secrets can lead to session hijacking and unauthorized API access. * **Fix:** Version `0.15.0` changes the default behavior so the loader no longer returns `sealedSession`/`accessToken`. A secure server-side mechanism is provided to fetch an access token when needed.

### Patches

Patched in [v0.15.0](https://github.com/workos/authkit-remix/releases/tag/v0.15.0).