DRUPAL-CONTRIB-2017-091

The Configuration Update Reports sub-module in the Configuration Update module project enables you to run reports to see what configuration on your site differs from the configuration distributed by a module, theme, or installation profile, and to revert, delete, or import configuration.

This module doesn't sufficiently protect the Import operation, thereby exposing a Cross Site Request Forgery (CSRF) vulnerability which can be exploited by unprivileged users to trick an administrator into unwanted import of configuration.

This vulnerability is mitigated by the fact that only configuration items distributed with a module, theme, or installation profile that is currently installed and enabled on the site can be imported, not arbitrary configuration values.