The DocumentTemplate package in Zope 2.2 and earlier allows a remote attacker to modify DTMLDocuments or DTMLMethods without authorization.
https://exchange.xforce.ibmcloud.com/vulnerabilities/4716
http://www.zope.org/Products/Zope/Hotfix_06_16_2000/security_alert
http://www.securityfocus.com/bid/1354
http://www.redhat.com/support/errata/RHSA-2000-038.html
http://archives.neohapsis.com/archives/bugtraq/2000-07/0412.html
http://archives.neohapsis.com/archives/bugtraq/2000-06/0144.html