The CORS Filter did not add an HTTP Vary header indicating that the response varies depending on Origin. This permitted client and server side cache poisoning in some circumstances (CVE-2017-7674). When using a VirtualDirContext it was possible to bypass security constraints and/or view the source code of JSPs for resources served by the VirtualDirContext using a specially crafted request (CVE-2017-12616). Note that CVE-2017-12616 only affected tomcat 7 in Mageia 5.