A vulnerability classified as problematic was found in SourceCodester Best Online News Portal 1.0. Affected by this vulnerability is an unknown functionality of the file check_availability.php. The manipulation of the argument username leads to exposure of sensitive information through data queries. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The identifier VDB-220645 was assigned to this vulnerability.