The vulnerability stems from an HTTP endpoint that 1) lacks authorization checks for manual backup initiation and 2) accepts GET requests. In Jenkins plugin architecture, HTTP endpoints are typically implemented via do* methods (doPost/doGet) in Java classes. The combination of missing permission validation (CWE-862) and CSRF vulnerability strongly suggests the backup trigger handler doesn't validate user permissions properly and lacks POST method enforcement. The naming follows Jenkins plugin conventions where management actions are often handled via ManagementLink implementations.