Hertzbeat is an open source, real-time monitoring system. Hertzbeat 1.6.0 and earlier declares a /api/monitor/{monitorId}/metric/{metricFull} endpoint to download job metrics. In the process, it executes a SQL query with user-controlled data, allowing for SQL injection.
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.