EspoCRM: Admin path traversal in LabelManager (Custom Label saving) allows arbitrary `.json` file read, write and delete

EspoCRM is an open source customer relationship management application. Prior to 9.3.10, an authenticated administrator can provide crafted input to the administrative Label Manager. Insufficient path validation allows traversal outside the intended directory and permits reading, modifying, creating, or deleting JSON files accessible to the application, subject to filesystem permissions and server configuration. This issue is fixed in version 9.3.10.