While exact function names aren't disclosed in available sources, the vulnerability description explicitly identifies the 'upload file management function' as the vulnerable component. In CMS architectures like baserCMS (CakePHP-based), file upload functionality is typically handled by a dedicated component or controller. The vulnerability pattern (CWE-434) strongly suggests insufficient file type validation in the upload handler. The confidence is high because: 1) Multiple sources explicitly reference the file management component 2) The attack vector matches classic unrestricted upload vulnerabilities 3) The required privilege level (site operator) aligns with backend file management functions.