A vulnerability was found in SourceCodester Yoga Class Registration System 1.0. It has been declared as problematic. This vulnerability affects the function query of the file admin/user/list.php. The manipulation of the argument name leads to cross site scripting. Using CWE to declare the problem leads to CWE-79. The weakness was disclosed 03/14/2023. The advisory is available at blog.csdn.net. This vulnerability was named CVE-2023-1395. The attack can 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 structure of the vulnerability defines a possible price range of USD $0-$5k at the moment. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project. It is declared as proof-of-concept. It is possible to download the exploit at blog.csdn.net. As 0-day the estimated underground price was around $0-$5k. A possible mitigation has been published before and not just after the disclosure of the vulnerability.