The create user function in baltic-it TOPqw Webportal 1.35.287.1 (fixed in version1.35.291), in /Apps/TOPqw/BenutzerManagement.aspx/SaveNewUser, is vulnerable to SQL injection. The JSON object username allows the manipulation of SQL queries.
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.