Unknown vulnerability in Drupal 4.5.0 through 4.5.3, 4.6.0, and 4.6.1 allows remote attackers to execute arbitrary PHP code via a public comment or posting.
Unknown vulnerability in the privilege system in Drupal 4.4.0 through 4.6.0, when public registration is enabled, allows remote attackers to gain privileges, due to an "input check" that "is not implemented properly."