GHSA-QRG9-F472-QWFM Possible route enumeration in production mode via RouteNotFoundError view in Vaadin 10, 11-14, and 15-19

Improper sanitization of path in default RouteNotFoundError view in com.vaadin:flow-server versions 1.0.0 through 1.0.14 Vaadin 10.0.0 through 10.0.18, 1.1.0 prior to 2.0.0 Vaadin 11 prior to 14, 2.0.0 through 2.6.1 Vaadin 14.0.0 through 14.6.1, and 3.0.0 through 6.0.9 Vaadin 15.0.0 through 19.0....