Broken access control for user creation in Pydio Cells 2.2.9 allows remote anonymous users to create standard users via the profile parameter. (In addition, such users can be granted several admin permissions via the Roles parameter.)
Directory traversal in the Copy, Move, and Delete features in Pydio Cells 2.2.9 allows remote authenticated users to enumerate personal files (or Cells files belonging to any user) via the nodes parameter (for Copy and Move) or via the Path parameter (for Delete).
Directory traversal in the Compress feature in Pydio Cells 2.2.9 allows remote authenticated users to overwrite personal files, or Cells files belonging to any user, via the format parameter.