A vulnerability was found in Campcodes Complete Online Student Management System 1.0. It has been rated as problematic. This issue affects some unknown processing of the file courses_view.php. The manipulation of the argument FirstRecord leads to cross site scripting. The CWE definition for the vulnerability is CWE-79. The weakness was released 04/09/2024. The advisory is shared at github.com. The identification of this vulnerability is CVE-2024-3531. The attack may be initiated remotely. Technical details are available. Furthermore, there is an exploit available. The exploit has been disclosed to the public and may be used. The price for an exploit might be around USD $0-$5k at the moment. MITRE ATT&CK project uses the attack technique T1059.007 for this issue. It is declared as proof-of-concept. The exploit is available at github.com. We expect the 0-day to have been worth approximately $0-$5k. A possible mitigation has been published before and not just after the disclosure of the vulnerability.