CVE-2012-5487
The sandbox whitelisting function (allowmodule.py) in Plone before 4.2.3 and 4.3 before beta 1 allows remote authenticated users with certain privileges to bypass the Python sandbox restriction and execute arbitrary Python code via vectors related to importing.
Date published : 2014-09-30
https://github.com/plone/Products.CMFPlone/blob/4.2.3/docs/CHANGES.txt