The Incutio XML-RPC (IXR) Library, as used in WordPress before 3.9.2 and Drupal 6.x before 6.33 and 7.x before 7.31, permits entity declarations without considering recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

Cross-site scripting (XSS) vulnerability in the Form API in Drupal 6.x before 6.32 and possibly 7.x before 7.29 allows remote authenticated users with the "administer taxonomy" permission to inject arbitrary web script or HTML via an option group label.

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.

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.

Cross-site scripting (XSS) vulnerability in Drupal 6.x before 6.28 and 7.x before 7.19, when running with older versions of jQuery that are vulnerable to CVE-2011-4969, allows remote attackers to inject arbitrary web script or HTML via vectors involving unspecified Javascript functions that are used to select DOM elements.

Drupal 6.x before 6.29 and 7.x before 7.24 uses the PHP mt_rand function to generate random numbers, which uses predictable seeds and allows remote attackers to predict security strings and bypass intended restrictions via a brute force attack.

The form API in Drupal 6.x before 6.29 and 7.x before 7.24, when used with unspecified third-party modules, performs form validation even when CSRF validation has failed, which might allow remote attackers to trigger application-specific impacts such as arbitrary code execution via application-specific vectors.

Drupal 6.x before 6.23 and 7.x before 7.11 does not verify that Attribute Exchange (AX) information is signed, which allows remote attackers to modify potentially sensitive AX information without detection via a man-in-the-middle (MITM) attack.

Cross-site request forgery (CSRF) vulnerability in the Aggregator module in Drupal 6.x before 6.23 and 7.x before 7.11 allows remote attackers to hijack the authentication of unspecified victims for requests that update feeds and possibly cause a denial of service (loss of updates due to rate limit) via unspecified vectors.

The printer friendly version functionality in the Book module in Drupal 6.x before 6.28 and 7.x before 7.19 does not properly restrict access to node that are part of a book outline, which allows remote authenticated users with the "access printer-friendly version" permission to read node titles and possibly node content via unspecified vectors.