Project sources exposure in Vaadin Designer

Overly relaxed configuration of frontend resources server in Vaadin Designer versions 4.3.0 through 4.6.3 allows remote attackers to access project sources via crafted HTTP request. See CWE-402: Transmission of Private Resources into a New Sphere (‘Resource Leak’) Affected products and mitigation Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include: Product version Mitigation Vaadin Designer 4.3.0 - 4.6.3 Upgrade to 4.6.4 or newer version