IBM DataPower Gateway 2018.4.1.0, 7.6.0.0 through 7.6.0.11, 7.5.2.0 through 7.5.2.18, 7.5.1.0 through 7.5.1.18, 7.5.0.0 through 7.5.0.19, and 7.7.0.0 through 7.7.1.3 could allow an authenticated user to inject arbitrary messages that would be displayed on the UI. IBM X-Force ID: 144892.