Multiple directory traversal vulnerabilities in fm.php in Simple File Manager (SFM) 0.24a allow remote attackers to use ".." sequences to (1) read arbitrary files via the filename parameter in a download action, (2) delete arbitrary files via the delete parameter, and (3) modify arbitrary files via the edit parameter, which can be leveraged to execute arbitrary code.

Cross-site scripting (XSS) vulnerability in ONEdotOH Simple File Manager (SFM) before 0.21 allows remote attackers to inject arbitrary web script or HTML via (1) file names and (2) directory names.

Cross-site scripting (XSS) vulnerability in fm.php in ONEdotOH Simple File Manager (SFM) 0.24a and earlier allows remote attackers to inject arbitrary web script or HTML via the msg parameter.