CVE-2026-27708

FOSSBilling, before 0.8.0, is vulnerable to an IDOR in the Servicecustom Client API: the __call method accepts an order_id and fetches the order without ensuring the authenticated client owns it, enabling cross-client access to other clients’ orders and exposing PII and service configuration data...

CVE-2026-27708: Improper Access Control

FOSSBilling is a free, open-source billing and client management system. In versions 0.7.2 and prior, the Servicecustom Client API's call method accepts an orderid parameter and fetches the associated order without verifying the authenticated client owns it, potentially exposing cross-client data...