SIS Informatik REWE GO SP17 before 7.7 contains a cross-site scripting vulnerability via rewe/prod/web/index.php (affected parameters are config, version, win, db, pwd, and user) and /rewe/prod/web/rewe_go_check.php (version and all other parameters).
View the template here CVE-2021-31537.yaml
References:
https://nvd.nist.gov/vuln/detail/CVE-2021-31537