A vulnerability classified as critical has been found in SourceCodester Online Health Care System 1.0. Affected is an unknown function of the file search.php. The manipulation of the argument f_name with the input 1%' or 1=1 ) UNION SELECT 1,2,3,4,5,database(),7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23# as part of string leads to sql injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.