🚨 An XSS in a low-priority application can become much more than a simple web vulnerability.

⚠️ An XSS bug in a low-priority app may be enough to reach other apps and APIs across an Auth0 tenant.

The issue isn't Auth0 itself.

It's how XSS + Implicit Grant Flow + permissive API settings can be chained together.

Key fixes:
✅ Disable Implicit Grant Flow
✅ Validate azp claims
✅ Restrict API access
✅ Limit Management API permissions

Read more 👇
https://blog.invidelabs.com/xss-auth0-tenant-compromise/