A vulnerability has been reported in Drupal, which can be exploited by malicious users to conduct script insertion attacks.

User provided input is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is viewed and interpreted as UTF-7.

Successful exploitation requires valid user credentials and privileges to edit pages for HTML exports or "administer taxonomy" permissions.

This is related to:
SA34950

The vulnerability is reported in Drupal 5.x prior to version 5.18 and Drupal 6.x prior to version 6.12.

Solution
Update to Drupal 6.12 or Drupal 5.18, or apply patches.
Further details available to Secunia VIM customers

Provided and/or discovered by
The vendor credits Markus Petrux.

Changelog
Further details available to Secunia VIM customers

Original Advisory
SA-CORE-2009-006:
http://drupal.org/node/461886

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers