FlashChat Arbitrary File Upload RCE

An unauthenticated arbitrary file upload vulnerability exists in FlashChat versions 6.0.2 and 6.0.4 through 6.0.8. The upload.php endpoint fails to properly validate file types and authentication, allowing attackers to upload malicious PHP scripts. Once uploaded, these scripts can be executed remotely, resulting in arbitrary code execution as the web server user.

PHP remote file inclusion vulnerability in index.php in MyBackup 1.4.0 allows remote authenticated users to execute arbitrary PHP code via a URL in the main_content parameter.

Directory traversal vulnerability in down.php in MyBackup 1.4.0 allows remote attackers to read arbitrary files via a .. (dot dot) in the filename parameter.