Unknown · Fossbilling · CVE-2026-53642
**Name of the Vulnerable Software and Affected Versions**
FOSSBilling versions 0.5.6 through 0.7.2
**Description**
When the Require Email Confirmation setting is enabled, a logged-in client with an unverified email address, indicated by the variable `email approved = 0`, can bypass page-side enforcement. This allows the user to access all client-area pages, such as the `/client/balance`, `/client/order/list`, and `/client/invoice` endpoints, and read sensitive account data, including wallet balances and transaction history. While the API correctly restricts unverified clients to profile-related endpoints, the page-side enforcement is overly permissive for any request path starting with `/client`.
**Recommendations**
Update FOSSBilling to version 0.8.0.