The filter_titles function in the Smart Breadcrumb module 6.x-1.x before 6.x-1.3 for Drupal does not properly convert a title to plain-text, which allows remote authenticated users with create or edit node permissions to conduct cross-site scripting (XSS) attacks via the title parameter.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.