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.

python_scripts.py in Plone before 4.2.3 and 4.3 before beta 1 allows remote attackers to cause a denial of service (memory consumption) via a large value, related to formatColumns.

Cross-site scripting (XSS) vulnerability in safe_html.py in Plone before 4.2.3 and 4.3 before beta 1 allows remote authenticated users with permissions to edit content to inject arbitrary web script or HTML via unspecified vectors.

at_download.py in Plone before 4.2.3 and 4.3 before beta 1 allows remote attackers to read arbitrary BLOBs (Files and Images) stored on custom content types via a crafted URL.

membership_tool.py in Plone before 4.2.3 and 4.3 before beta 1 allows remote attackers to enumerate user account names via a crafted URL.

The App.Undo.UndoSupport.get_request_var_or_attr function in Zope before 2.12.21 and 3.13.x before 2.13.11, as used in Plone before 4.2.3 and 4.3 before beta 1, allows remote authenticated users to gain access to restricted attributes via unspecified vectors.

ftp.py in Plone before 4.2.3 and 4.3 before beta 1 allows remote attackers to read hidden folder contents via unspecified vectors.

python_scripts.py in Plone before 4.2.3 and 4.3 before beta 1 allows remote attackers to cause a denial of service (infinite loop) via an RSS feed request for a folder the user does not have permission to access.

Cross-site scripting (XSS) vulnerability in widget_traversal.py in Plone before 4.2.3 and 4.3 before beta 1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

python_scripts.py in Plone before 4.2.3 and 4.3 before beta 1 allows remote attackers to execute Python code via a crafted URL, related to "go_back."