CVE-2026-63416 draw.io: Path traversal in ExportProxyServlet allows access to arbitrary backend endpoints

draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, src/main/java/com/mxgraph/online/ExportProxyServlet.java uses request.getPathInfo to build a proxyPath and appends it directly to EXPORTURL without rejecting dot segments or confirming that the normalize...