Exponentcms Exponent CMS → 2.3.0

We've been using the wrong method (expFile::fileUpload) in some instances to work with a file received by a file input, adding it to our expFile database instead of simply moving it (expFile::moveUploadedFile) inside our file system (sometimes /tmp is location outside the exp folder). Furthermore, we haven't always been deleting that temp file after we are finished with it.