The OpenID module in Drupal 6.x before 6.36 and 7.x before 7.38 allows remote attackers to log into other users' accounts by leveraging an OpenID identity from certain providers, as demonstrated by the Verisign, LiveJournal, and StackExchange providers.

Session fixation vulnerability in Drupal 5.x before 5.9 and 6.x before 6.3, when contributed modules "terminate the current request during a login event," allows remote attackers to hijack web sessions via unknown vectors.

** DISPUTED ** Cross-site scripting (XSS) vulnerability in the EventCalendar module for Drupal 7.14 allows remote attackers to inject arbitrary web script or HTML via the year parameter to eventcalander/. NOTE: this issue has been disputed by the Drupal Security Team; it may be site-specific. If so, then this CVE will be REJECTed in the future.

Drupal Reflected file download vulnerability

Incorrect Authorization in Drupal core

Drupal Core Cross-site scripting vulnerability

Drupal, probably 5.10 and 6.4, does not set the secure flag for the session cookie in an https session, which can cause the cookie to be sent in http requests and make it easier for remote attackers to capture this cookie.

Drupal saving user accounts can sometimes grant the user all roles

Drupal 4.6.x before 4.6.10 and 4.7.x before 4.7.4 allows form submissions to be redirected, which allows remote attackers to obtain arbitrary form information via a crafted URL.

Drupal sensitive information disclosure

The forum list in Drupal 7.x before 7.14 does not properly check user permissions for unpublished forum posts, which allows remote authenticated users to obtain sensitive information such as the post title via the forum overview page.

Drupal cross-site scripting vulnerability via actions feature and trigger module

The comment_form_add_preview function in comment.module in Drupal before 4.7.6, and 5.x before 5.1, and vbDrupal, allows remote attackers with "post comments" privileges and access to multiple input filters to execute arbitrary code by previewing comments, which are not processed by "normal form validation routines."

An access bypass issue was found in Drupal 7.x before version 7.5. If a Drupal site has the ability to attach File upload fields to any entity type in the system or has the ability to point individual File upload fields to the private file directory in comments, and the parent node is denied access, non-privileged users can still download the file attached to the comment if they know or guess its direct URL.

Drupal Node Validation Bypass in the node module API

Algorithmic complexity vulnerability in the _filter_url function in the text filtering system (modules/filter/filter.module) in Drupal 7.x before 7.14 allows remote authenticated users with certain roles to cause a denial of service (CPU consumption) via a long email address.

Open redirect vulnerability in the Field UI module in Drupal 7.x before 7.38 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the destinations parameter.

Drupal REST API can bypass comment approval

Drupal sensitive information disclosure

The core upload module in Drupal 5.x before 5.11 allows remote authenticated users to bypass intended access restrictions and read "files attached to content" via unknown vectors.