(1) cb_decode.py and (2) linkintegrity.py in Plone 2.1 through 4.1, 4.2.x through 4.2.5, and 4.3.x through 4.3.1 allow remote authenticated users to cause a denial of service (resource consumption) via a large zip archive, which is expanded (decompressed).

The WYSIWYG component (wysiwyg.py) in Plone 2.1 through 4.1, 4.2.x through 4.2.5, and 4.3.x through 4.3.1 allows remote attackers to obtain sensitive information via a crafted URL, which reveals the installation path in an error message.

sendto.py in Plone 2.1 through 4.1, 4.2.x through 4.2.5, and 4.3.x through 4.3.1 allows remote authenticated users to spoof emails via unspecified vectors.

The isURLInPortal method in the URLTool class in in_portal.py in Plone 2.1 through 4.1, 4.2.x through 4.2.5, and 4.3.x through 4.3.1 treats URLs starting with a space as a relative URL, which allows remote attackers to bypass the allow_external_login_sites filtering property, redirect users to arbitrary web sites, and conduct phishing attacks via a space before a URL in the "next" parameter to acl_users/credentials_cookie_auth/require_login.

Plone 4.1.3 and earlier computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.

Unspecified vulnerability in Zope 2.12.x and 2.13.x, as used in Plone 4.0.x through 4.0.9, 4.1, and 4.2 through 4.2a2, allows remote attackers to execute arbitrary commands via vectors related to the p_ class in OFS/misc_.py and the use of Python modules.

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.

Cross-site scripting (XSS) vulnerability in skins/plone_templates/default_error_message.pt in Plone before 2.5.3 allows remote attackers to inject arbitrary web script or HTML via the type_name parameter to Members/ipa/createObject.

Unspecified vulnerability in (1) Zope 2.12.x before 2.12.19 and 2.13.x before 2.13.8, as used in Plone 4.x and other products, and (2) PloneHotfix20110720 for Plone 3.x allows attackers to gain privileges via unspecified vectors, related to a "highly serious vulnerability." NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-0720.

Cross-site scripting (XSS) vulnerability in Plone 4.1 and earlier allows remote attackers to inject arbitrary web script or HTML via a crafted URL.