parse-server is a Parse Server for Node.js / Express. This vulnerability allows SQL injection when Parse Server is configured to use the PostgreSQL database. The vulnerability has been fixed in 6.5.0 and 7.0.0-alpha.20.
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.