Drupal 4.6.x before 4.6.7 and 4.7.0, when running on Apache with mod_mime, does not properly handle files with multiple extensions, which allows remote attackers to upload, modify, or execute arbitrary files in the files directory.
Cross-site scripting (XSS) vulnerability in the project module (project.module) in Drupal 4.5 and 4.6 allows remote attackers to inject arbitrary web script or HTML via unknown attack vectors.
Drupal 4.5.0 through 4.5.5 and 4.6.0 through 4.6.3, when running on PHP5, does not correctly enforce user privileges, which allows remote attackers to bypass the "access user profiles" permission.