Cross-site scripting (XSS) vulnerability in Drupal 5.x before 5.17 and 6.x before 6.11, as used in vbDrupal before 5.17.0, allows remote attackers to inject arbitrary web script or HTML via crafted UTF-8 byte sequences before the Content-Type meta tag, which are treated as UTF-7 by Internet Explorer 6 and 7.

Unspecified vulnerability in Drupal 5.x before 5.17 and 6.x before 6.11, as used in vbDrupal before 5.17.0, allows user-assisted remote attackers to obtain sensitive information by tricking victims into visiting the front page of the site with a crafted URL and causing form data to be sent to an attacker-controlled site, possibly related to multiple / (slash) characters that are not properly handled by includes/bootstrap.inc, as demonstrated using the search box. NOTE: this vulnerability can be leveraged to conduct cross-site request forgery (CSRF) attacks.

Multiple cross-site request forgery (CSRF) vulnerabilities in the update feature in Drupal 5.x before 5.13 and 6.x before 6.7 allow remote attackers to perform unauthorized actions as the superuser via unspecified vectors, as demonstrated by causing the superuser to "execute old updates" that modify the database.

Drupal 5.x before 5.13 and 6.x before 6.7 does not delete all related content when an input format is deleted, which prevents the content from being properly filtered and allows remote attackers to conduct cross-site scripting (XSS) attacks via unspecified vectors.

Cross-site scripting (XSS) vulnerability in Drupal 5.x before 5.12 and 6.x before 6.6 allows remote authenticated users with create book content or edit node book hierarchy permissions to inject arbitrary web script or HTML via the book page title.

includes/bootstrap.inc in Drupal 5.x before 5.12 and 6.x before 6.6, when the server is configured for "IP-based virtual hosts," allows remote attackers to include and execute arbitrary files via the HTTP Host header.

The validation functionality in the core upload module in Drupal 6.x before 6.5 allows remote authenticated users to bypass intended access restrictions and "attach files to content," related to a "logic error."

Unrestricted file upload vulnerability in the BlogAPI module in Drupal 5.x before 5.10 and 6.x before 6.4 allows remote authenticated users to execute arbitrary code by uploading a file with an executable extension, which is not validated.

Cross-site scripting (XSS) vulnerability in the output filter in Drupal 5.x before 5.10 and 6.x before 6.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

The private filesystem in Drupal 5.x before 5.10 and 6.x before 6.4 trusts the MIME type sent by a web browser, which allows remote authenticated users to conduct cross-site scripting (XSS) attacks by uploading files containing arbitrary web script or HTML.