Advisory Weakness Curation

Directory traversal in development mode handler in Vaadin 14 and 15-17 Improper URL validation in development mode handler in `com.vaadin:flow-server` versions 2.0.0 through 2.4.1 (Vaadin 14.0.0 through 14.4.2), and 3.0 prior to 5.0 (Vaadin 15 prior to 18) allows attacker to request arbitrary files stored outside of intended frontend resources folder. - https://vaadin.com/security/cve-2020-36321

Path Traversal Improper URL validation in development mode handler in `com.vaadin:flow-server` allows attacker to request arbitrary files stored outside of intended frontend resources folder.

Path Traversal Improper URL validation in development mode handler in `com.vaadin:flow-server` allows attacker to request arbitrary files stored outside of intended frontend resources folder.

Path Traversal Improper URL validation in development mode handler in `com.vaadin:flow-server` allows attacker to request arbitrary files stored outside of intended frontend resources folder.