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GHSA-v3gr-w9gf-23cx

The AuthKit Remix Library renders sensitive auth data in HTML

Source: GitHub Advisory Database (reviewed) High CVE-2025-55009

Packages

EcosystemPackageAffectedFixed in
npm @workos-inc/authkit-remix < 0.15.0 0.15.0

Details

As written in the advisory (Markdown source, shown as plain text).

### 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).

References

External links from the advisory. They lead to third-party sites.