SQL injection vulnerability in the get_messages function in server/plugins/chatroom/chatroom.php in FreiChat 9.6 allows remote attackers to execute arbitrary SQL commands via the time parameter to server/freichat.php.
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.