A vulnerability classified as critical has been found in SourceCodester Simple E-Learning System 1.0. Affected is an unknown function of the file search.php. The manipulation of the argument classCode with the input 1'||(SELECT 0x74666264 WHERE 5610=5610 AND (SELECT 7504 FROM(SELECT COUNT(*),CONCAT(0x7171627a71,(SELECT (ELT(7504=7504,1))),0x71717a7071,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a))||' leads to sql injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.