DumbDrop, a file upload application that provides an interface for dragging and dropping files, has a DOM cross-site scripting vulnerability in the upload functionality prior to commit db27b25372eb9071e63583d8faed2111a2b79f1b. A user could be tricked into uploading a file with a malicious payload. Commit db27b25372eb9071e63583d8faed2111a2b79f1b fixes the vulnerability.