The CCK was updated August 10, 2010 to 6.x-2.8, to fix a reported security issue: http://drupal.org/node/880732 The version in Fedora 13 (possibly other branches) is 6.x-2.7 and should be updated.
drupal-cck-6.x.2.8-1.fc13 has been submitted as an update for Fedora 13. https://admin.fedoraproject.org/updates/drupal-cck-6.x.2.8-1.fc13
drupal-cck-6.x.2.8-1.fc14 has been submitted as an update for Fedora 14. https://admin.fedoraproject.org/updates/drupal-cck-6.x.2.8-1.fc14
drupal-cck-6.x.2.8-1.fc12 has been submitted as an update for Fedora 12. https://admin.fedoraproject.org/updates/drupal-cck-6.x.2.8-1.fc12
drupal-cck-6.x.2.8-1.fc14 has been pushed to the Fedora 14 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update drupal-cck'. You can provide feedback for this update here: https://admin.fedoraproject.org/updates/drupal-cck-6.x.2.8-1.fc14
drupal-cck-6.x.2.8-1.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report.
drupal-cck-6.x.2.8-1.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.
drupal-cck-6.x.2.8-1.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.