IBM InfoSphere Information Server 11.7.0.0 through 11.7.1.6
could allow an authenticated user to delete another user's comments due to improper ownership management.
InfoSphere Information Server, InfoSphere Information Server on Cloud 11.7.0.0 to 11.7.1.6 DT434984
--Apply InfoSphere Information Server version 11.7.1.0
--Apply InfoSphere Information Server version 11.7.1.6
--Apply Information Server Microservices tier security patch