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A security issue has been identified, affecting WordPress and Drupal platforms. These platforms are vulnerable to attacks that leverage the PHP XML parser to exhaust server resources, which can result slow-loading pages or complete unavailability.
If you have installed WordPress or Drupal through the 1&1 App Center in Safe Mode, updates are automatically applied to patch the vulnerability. No action is needed on your part.
If you have installed WordPress or Drupal through the 1&1 App Center in Free Mode, or manually, please check your currently installed version and update to the latest version as soon as possible if necessary.
The latest releases that patch the vulnerability are provided below. To find instructions on how to update your platform, use the links provided to access the platform’s support page on updates.