Unrestricted file upload vulnerability in the add2 action in a_upload.php in OneCMS 2.4, and possibly earlier, allows remote attackers to execute arbitrary code by uploading a file with an executable extension and using a safe content type such as image/gif, then accessing it via a direct request to the file in an unspecified directory.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.146
EPSS Ranking 94.2%