Privilege escalation

Anonymous users can create users with arbitrary roles

Versions affected

  • 4.0.3
  • 4.0.2
  • 4.0.1
  • 4.0
  • 3.3.5
  • 3.3.4
  • 3.3.3
  • 3.3.2


This is an escalation of privileges attack that can be used by anonymous users to gain access to a Plone site's administration controls, view unpublished content, create new content and modify a site's skin. The sandbox protecting access to the underlying system is still in place, and it does not grant access to other applications running on the same Zope instance.

Current status


Discovered by

  • Alan Hoey

Fixed by

  • Plone Security Team

Coordinated by

  • Plone Security Team