An exploitable SQL injection vulnerability exists in the GetSchool.php functionality of OS4Ed openSIS 7.3. A specially crafted HTTP request can lead to SQL injection. An attacker can make an authenticated HTTP request to trigger this vulnerability.
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1074
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1074
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6125