Drupal 6.x before 6.16 uses a user-supplied value in output during site installation which could allow an attacker to craft a URL and perform a cross-site scripting attack.

Drupal Denial of service via transliterate mechanism

SQL injection vulnerability in the SQL comment filtering system in the Database API in Drupal 7.x before 7.39 allows remote attackers to execute arbitrary SQL commands via an SQL comment.

The Drupal.checkPlain function in Drupal 6.0 only escapes the first instance of a character in ECMAScript, which allows remote attackers to conduct cross-site scripting (XSS) attacks.

The OpenID module in Drupal 6.x before 6.30 and 7.x before 7.26 allows remote OpenID users to authenticate as other users via unspecified vectors.

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.

** DISPUTED ** 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."

Cross-site scripting (XSS) vulnerability in the Autocomplete system in Drupal 6.x before 6.37 and 7.x before 7.39 allows remote attackers to inject arbitrary web script or HTML via a crafted URL, related to uploading files.

Cross-Site Request Forgery in Drupal core

Cross-site scripting (XSS) vulnerability in the Ajax system in Drupal 7.x before 7.29 allows remote attackers to inject arbitrary web script or HTML via vectors involving forms with an Ajax-enabled textfield and a file field.

Drupal 4.6.x before 4.6.7 and 4.7.0, when running on Apache with mod_mime, does not properly handle files with multiple extensions, which allows remote attackers to upload, modify, or execute arbitrary files in the files directory.

Drupal has open redirect vulnerability in the Overlay module

The multisite feature in Drupal 6.x before 6.32 and 7.x before 7.29 allows remote attackers to cause a denial of service via a crafted HTTP Host header, related to determining which configuration file to use.

Drupal 6.x before 6.35 and 7.x before 7.35 allows remote authenticated users to reset the password of other accounts by leveraging an account with the same password hash as another account and a crafted password reset URL.

Drupal core allows Content Spoofing

Cross-site request forgery (CSRF) vulnerability in the aggregator module in Drupal 4.7.x before 4.7.11 and 5.x before 5.6 allows remote attackers to delete items from a feed as privileged users.

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.

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 Brute force amplification attacks via XML-RPC

Drupal file REST resource does not properly validate