Trac 0.11.6 does not properly check workflow permissions before modifying a ticket. This can be exploited by an attacker to change the status and resolution of tickets without having proper permissions.
In ConsoleKit before 0.4.2, an intended security policy restriction bypass was found. This flaw allows an authenticated system user to escalate their privileges by initiating a remote VNC session.
PHP5 before 5.4.4 allows passing invalid utf-8 strings via the xmlTextWriterWriteAttribute, which are then misparsed by libxml2. This results in memory leak into the resulting output.
offlineimap before 6.3.4 added support for SSL server certificate validation but it is still possible to use SSL v2 protocol, which is a flawed protocol with multiple security deficiencies.