A vulnerability has been reported in Zope, which can be exploited by malicious people to compromise a vulnerable system. The vulnerability is caused due to an unspecified error and can be exploited to execute arbitrary commands by sending specially crafted requests to the server. The vulnerability is reported in versions 2.12.x and 2.13.x
net-zope/zope-2.12.20 and net-zope/zope-2.13.10 contain fix for this vulnerability and they were already added on 2011-10-04.