A vulnerability, which was classified as critical, was found in SourceCodester Gym Management System. This affects an unknown part of the file login.php. The manipulation of the argument user_login with the input 123@xx.com' OR (SELECT 9084 FROM(SELECT COUNT(*),CONCAT(0x7178767871,(SELECT (ELT(9084=9084,1))),0x71767a6271,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)-- dPvW leads to sql injection. Access to the local network is required for this attack. The exploit has been disclosed to the public and may be used. The identifier VDB-205833 was assigned to this vulnerability.