The Node Reference module in Content Construction Kit (CCK) module 6.x before 6.x-2.7 for Drupal does not perform access checks for the source field in the backend URL for the autocomplete widget, which allows remote attackers to discover titles and IDs of controlled nodes.

The Node Reference module in Content Construction Kit (CCK) module 5.x before 5.x-1.11 and 6.x before 6.x-2.7 for Drupal does not perform access checks before displaying referenced nodes, which allows remote attackers to read controlled nodes.

Multiple cross-site scripting (XSS) vulnerabilities in Drupal Content Construction Kit (CCK) 5.x through 5.x-1.8 allow remote authenticated users with "administer content" permissions to inject arbitrary web script or HTML via the (1) "field label," (2) "help text," or (3) "allowed values" settings.