Multiple SQL injection vulnerabilities in BLOG:CMS 4.2.1b allow remote attackers to execute arbitrary SQL commands via (1) the blogid parameter to index.php, (2) the user parameter to action.php, or (3) the field parameter to admin/plugins/table/index.php.
Improper Neutralization of Special Elements used in an SQL Command The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.