[ CVE-2026-107369 · Published 13 Oct 2026 ]
Vulnerability in Auth0 nextjs-auth0
CVSS 6.1
EPSS <1%No fix listed yet
[ Description ]Official description
The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative path, leading to a redirect to an unintended domain.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.