CVE-2026-27604

FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version 0.8.0, an authorization bypass in the API role handling allows unauthenticated access to privileged /api/system/ endpoints. Because system resolves to the cron admin identity,...

CVE-2026-27604

FOSSBilling 0.5.4–0.7.x contains an authorization bypass in the API role handling that permits unauthenticated access to privileged /api/system/* endpoints. The issue maps to the system identity (cron admin), allowing admin API methods without credentials, session, or CSRF tokens. Version 0.8.0 i...