• Advisory ID: DRUPAL-SA-CONTRIB-2009-047
  • Project: Calendar (third-party module)
  • Version: 6.x
  • Date: 2009-July-29
  • Security risk: Moderately critical
  • Exploitable from: Remote
  • Vulnerability: Cross Site Scripting


The Calendar module enables Views module to display any Date module date field as a calendar. The module does not properly escape user input when displaying titles of content types that have Date fields. A user with permission to create new content types (including via the Date module's Date Tools sub-module) could attempt a cross site scripting (XSS) attack, leading to the user gaining full administrative access.

Versions affected

  • Calendar for Drupal 6.x prior to 6.x-2.2

Drupal core is not affected. If you do not use the contributed Calendar module, there is nothing you need to do.


Upgrade to the latest version:

See also the Calendar project page.

Reported by

Justin C. Klein Keane

Fixed by

Justin C. Klein Keane


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