The Quiz module provides tools for authoring and administering quizzes through Drupal. A quiz is given as a series of questions, with only one question appearing per page. Scores are then stored in the database. The module does not properly escape user-supplied data on some pages, allowing malicious users to insert arbitrary HTML and script code into these pages. A user who has access to create quizzes or quiz questions could attempt a cross site scripting (XSS) attack which may lead to the user gaining full administrative access.
Versions affectedDrupal core is not affected. If you do not use the contributed Quiz module, there is nothing you need to do.
SolutionIf you use Drupal 5.x, uninstall the Quiz module which has been marked unmaintained for six months or upgrade to Quiz for Drupal 6.x.