Cross-site scripting (XSS) vulnerability in the Portlet Configuration module in Liferay Portal 7.1.0 through 7.3.2 and Liferay DXP 7.1 before fix pack 19 and 7.2 before fix pack 7 allows remote attackers to inject arbitrary web script or HTML via the _com_liferay_portlet_configuration_css_web_portlet_PortletConfigurationCSSPortlet_portletResource parameter.