Cross-site scripting (XSS) vulnerability in the URL checking infrastructure in Plone CMS 5.x through 5.0.6, 4.x through 4.3.11, and 3.3.x through 3.3.6 allows remote attackers to inject arbitrary web script or HTML via a crafted URL.
Plone CMS versions 4.3.11 and below and versions 5.0.6 and below suffer from cross site scripting, open redirection, and path traversal vulnerabilities.