CVE-2021-31409 Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19

Unsafe validation RegEx in EmailValidator component in com.vaadin:vaadin-compatibility-server versions 8.0.0 through 8.12.4 Vaadin versions 8.0.0 through 8.12.4 allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses...