Stored cross-site scripting (XSS) vulnerability in the Dynamic Data Mapping module's DDMForm in Liferay Portal 7.2.0 through 7.4.3.4, and older unsupported versions, and Liferay DXP 7.4.13, 7.3 before update 4, 7.2 before fix pack 17, and older unsupported versions allows remote authenticated users to inject arbitrary web script or HTML via the instanceId parameter.