A vulnerability was found in SourceCodester Simple Student Attendance System 1.0 and classified as critical. Affected by this issue is the function delete_class/delete_student of the file /ajax-api.php of the component List of Classes Page. The manipulation of the argument id with the input 1337'+or+1=1;--+ leads to sql injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-254858 is the identifier assigned to this vulnerability.