DRK Odenwaldkreis Testerfassung is an open source solution for obtaining and recording rapid test results for corona antigens.A cross-site scripting vulnerability exists in DRK Odenwaldkreis Testerfassung March-2021, which can be exploited by attackers to inject arbitrary web script or HTML via all parameters in the HTML form fields of all components. All parameters in the HTML form fields of all components can be injected with arbitrary web script or HTML.