• Advisory ID: DRUPAL-SA-CONTRIB-2012-055
  • Project: Fusion (third-party theme)
  • Version: 6.x
  • Date: 2012-March-28
  • Security risk: Moderately critical
  • Exploitable from: Remote
  • Vulnerability: Cross Site Scripting


CVE: CVE-2012-2083

Fusion is a base theme that provides a configurable grid system and modular styling for common Drupal UI components.

The theme outputs a CSS class for the tag based on the current URL, but does not provide sufficient filtering to prevent a Cross site scripting (XSS) attack.

This vulnerability affects all sub-themes of Fusion.

Versions affected

  • Fusion 6.x-1.x versions prior to 6.x-1.13

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


If you utilize Fusion or a Fusion-based theme, you should upgrade to Fusion 6.x-1.13.

  • Most Fusion sub-themes will inherit this fix.
  • If you copied code from Fusion core's template.php file into a custom sub-theme's template.php file you should compare your code to the changes made in this release to ensure the vulnerability has not been duplicated.
    In YOURTHEME_preprocess_page() look for this code:

    $vars['body_id'] = 'pid-' . strtolower(preg_replace('/[_+\/]/', '-', drupal_get_path_alias($_GET['q'])));

    If this code exists within your sub-theme, there are two possible solutions:

    1. Recommended: Delete the line of code. It is unnecessary in your sub-theme since the sub-theme will inherit this functionality from Fusion Core
    2. Replace the code with the following:

      $vars['body_id'] = 'pid-' . strtolower(fusion_core_clean_css_identifier(drupal_get_path_alias($_GET['q'])));

      fusion_core_clean_css_identifier() is a function added in this security release of Fusion. Making this change to your sub-theme's code without updating Fusion core will result in a WSOD.

Also see the Fusion project page.

Reported by

Fixed by

Coordinated by

Contact and More Information

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