The CMFEditions component 2.x in Plone 4.0.x through 4.0.9, 4.1, and 4.2 through 4.2a2 does not prevent the KwAsAttributes classes from being publishable, which allows remote attackers to access sub-objects via unspecified vectors, a different vulnerability than CVE-2011-3587.
http://www.securityfocus.com/bid/50287
http://secunia.com/advisories/46323
http://pypi.python.org/pypi/Products.PloneHotfix20110928/1.0
http://plone.org/products/plone-hotfix/releases/20110928/PloneHotfix20110928-1.0.zip