When constructing contact search queries, values for certain fields were not properly escaped -- allowing for SQL injection.

When constructing the SQL queries for deleting activities or getting summary information about CiviCampaigns, there was inadequate escaping of SQL variables that were passed in from request parameters.

CiviCRM did not properly purify the content of the note fields attached to CiviCase activities when generating Case Reports or viewing the Case Activity

Backend users may be able to upload and execute a maliciously crafted "PHAR" file.

The "PharExtensionInterceptor" library from Typo3 addresses this problem. Many projects - including the current Drupal and Joomla releases - already activate this protection and are already secure. However, some environments - such as WordPress - do not have it. This update extends the protection to all CiviCRM-supported environments.

Using a carefully crafted request, a backend user could determine the API credentials of another user.

When processing a CiviCRM API request, the entity name was not properly validated. This could potentially lead to loading an arbitrary file on the server.