CVE-2016-2403 fixes an unauthorized access on a misconfigured Ldap server when using an empty password
CVE-2016-4423 avoids storing large usernames in UsernamePasswordFormAuthenticationListener.
CVE-2016-1902 fixes the SecureRandom class when OpenSSL fails.
CVE-2015-8124 fixes a session fixation in the "Remember Me" login feature.
CVE-2015-8125 fixes a potential remote timing attack vulnerability in Security remember-me service.
CVE-2015-4050 fixes unauthorized access when using ESI.
CVE-2015-2308 is about possible code injections via the ESI framework.
CVE-2015-2309 fixes some unsafe methods in the Request class.
CVE-2014-6061 is about a potential security issue when parsing the Authorization header.
CVE-2014-6072 is about fixing a CSRF vulnerability in the Web Profiler.