Cross-site scripting (XSS) vulnerability in IBM Power Hardware Management Console (HMC) 7R7.1.0, 7R7.2.0, 7R7.3.0 through 7R7.3.5, 7R7.7.0 through SP3, and 7R7.8.0 before SP1 allows remote attackers to inject arbitrary web script or HTML via the user name on the logon screen. IBM X-Force ID: 91163.