issabelPBX version 2.11 is affected by a Cross Site Scripting (XSS) vulnerability. In file page.backup_restore.php, the exit function will …

issabelPBX version 2.11 is affected by a Cross Site Scripting (XSS) vulnerability. In file page.backup_restore.php, the exit function will terminate the script and print the message to the user. The message will contain $_REQUEST without sanitization, then there is a XSS vulnerability.