Cross-site request forgery (CSRF) vulnerability in Drupal 7.12 and earlier allows remote attackers to hijack the authentication of arbitrary users for requests that end a session via the user/logout URI. NOTE: the vendor disputes the significance of this issue, by considering the "security benefit against platform complexity and performance impact" and concluding that a change to the logout behavior is not planned because "for most sites it is not worth the trade-off.

CRLF injection vulnerability in Drupal 4.5.x before 4.5.8 and 4.6.x before 4.5.8 allows remote attackers to inject headers of outgoing e-mail messages and use Drupal as a spam proxy.

Session fixation vulnerability in Drupal 4.5.x before 4.5.8 and 4.6.x before 4.5.8 allows remote attackers to gain privileges by tricking a user to click on a URL that fixes the session identifier.

Cross-site scripting (XSS) vulnerability in Drupal 4.5.x before 4.5.8 and 4.6.x before 4.5.8 allows remote attackers to inject arbitrary web script or HTML via unknown attack vectors.

Drupal 4.5.x before 4.5.8 and 4.6.x before 4.5.8, when menu.module is used to create a menu item, does not implement access control for the page that is referenced, which might allow remote attackers to access administrator pages.

Interpretation conflict in file.inc in Drupal 4.5.0 through 4.5.5 and 4.6.0 through 4.6.3 allows remote authenticated users to inject arbitrary web script or HTML via HTML in a file with a GIF or JPEG file extension, which causes the HTML to be executed by a victim who views the file in Internet Explorer as a result of CVE-2005-3312. NOTE: it could be argued that this vulnerability is due to a design flaw in Internet Explorer and the proper fix should be in that browser; if so, then this should not be treated as a vulnerability in Drupal.

Multiple cross-site scripting (XSS) vulnerabilities in Drupal 4.5.0 through 4.5.5 and 4.6.0 through 4.6.3 allow remote attackers to inject arbitrary web script or HTML via various HTML tags and values, such as the (1) legend tag and the value parameter used in (2) label and (3) input tags, possibly due to an incomplete blacklist.

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."

Cross-site scripting (XSS) vulnerability in common.inc in Drupal before 4.5.2 allows remote attackers to inject arbitrary web script or HTML via certain inputs.