Multiple cross-site scripting (XSS) vulnerabilities in Drupal 6.x before 6.18 allow remote authenticated users with certain privileges to inject arbitrary web script or HTML via (1) an action description, (2) an action message, (3) a node, or (4) a taxonomy term, related to the actions feature and the trigger module.
http://www.securityfocus.com/bid/42391
http://www.debian.org/security/2010/dsa-2113
http://marc.info/?l=oss-security&m=128440896914512&w=2