An issue was discovered in Observium Professional, Enterprise & Community 20.8.10631. It is vulnerable to SQL Injection due to the fact that it is possible to inject malicious SQL statements in malformed parameter types. This can occur via username[0] to the default URI, because of includes/authenticate.inc.php.
https://gist.github.com/ahpaleus/c9ee1108d146a94470f191fc423bee10