The Site Documentation Drupal module 5.x before 5.x-1.8 and 6.x before 6.x-1.1 allows remote authenticated users to gain privileges of other users by leveraging the "access content" permission to list tables and obtain session IDs from the database.

More... (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-2271)