Help Viewer in Apple Mac OS X 10.4.11 and 10.5.2 allows remote attackers to execute arbitrary Applescript via a help:topic_list URL that injects HTML or JavaScript into a topic list page, as demonstrated using a help:runscript link.
Improper Control of Generation of Code The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.