Solution : https://service.sap.com/sap/support/notes/1611670 (SAP Service marketplace login required)
Key words : 
software component   sap_bw                        business inform, terms reflected cross-site scripting, exploit reflected cross-site scripting, manual post-implementation step manually, basis support package level corresponds, reflected cross-site scripting, relevant sap basis support package, repeat steps 2b-2d, manual post-implement, manipulating business planning
Related Notes : 
       
| 1582870 | ABAP XSS Escaping Support |