Multiple cross-site scripting (XSS) vulnerabilities in the DataDynamics.Reports.Web class library in GrapeCity Data Dynamics Reports before 1.6.2084.14 allow remote attackers to inject arbitrary web script or HTML via (1) the reportName or (2) uniqueId parameter to CoreViewerInit.js, or the (3) uniqueId or (4) traceLevel parameter to CoreController.js, as reachable by CoreHandler.ashx.