PHPFreeNews is prone to an SQL injection vulnerability due to a failure in the application to properly sanitize user-supplied input before using it in an SQL query. An example of this vulnerability is demonstrated by providing a login with the username "Admin" and a password of ') or isnull(1/0) or ('a'='a. Successful exploitation of this vulnerability could result in a compromise of the application, disclosure or modification of data, or may permit an attacker to exploit vulnerabilities in the underlying database implementation.