The J2EE Engine in SAP NetWeaver 6.40, 7.02, and earlier allows remote attackers to redirect users to arbitrary web sites, conduct phishing attacks, and obtain sensitive information (cookies and SAPPASSPORT) via unspecified vectors.
https://service.sap.com/sap/support/notes/1854826
https://erpscan.io/advisories/erpscan-13-021-sap-portal-unvalidated-redirect/