Cross-site request forgery (CSRF) vulnerability in the Todo Filter module before 6.x-1.1 and 7.x-1.x before 7.x-1.1 for Drupal allows remote attackers to hijack the authentication of arbitrary users for requests that toggle a task via unspecified vectors.
https://www.drupal.org/node/2403465
https://www.drupal.org/node/2403015
https://www.drupal.org/node/2403013