A vulnerability classified as critical has been found in CP Appointment Calendar Plugin up to 1.1.5 on WordPress. This affects the function dexprocessreadytogoappointment of the file dexappointments.php. The manipulation of the argument itemnumber leads to sql injection. It is possible to initiate the attack remotely. The patch is named e29a9cdbcb0f37d887dd302a05b9e8bf213da01d. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-225351.