ZServer in Zope 2.10.x before 2.10.12 and 2.11.x before 2.11.7 allows remote attackers to cause a denial of service (crash of worker threads) via vectors that trigger uncaught exceptions.
Cross-site scripting (XSS) vulnerability in Zope 2.8.x before 2.8.12, 2.9.x before 2.9.12, 2.10.x before 2.10.11, 2.11.x before 2.11.6, and 2.12.x before 2.12.3 allows remote attackers to inject arbitrary web script or HTML via vectors related to error messages.
PythonScripts in Zope 2 2.11.2 and earlier, as used in Conga and other products, allows remote authenticated users to cause a denial of service (resource consumption or application halt) via certain (1) raise or (2) import statements.