CVE-2016-4041
Plone 4.0 through 5.1a1 does not have security declarations for Dexterity content-related WebDAV requests, which allows remote attackers to gain webdav access via unspecified vectors.
Date published : 2017-02-24
https://plone.org/security/hotfix/20160419/privilege-escalation-in-webdav