The Drupal AJAX API does not disable JSONP by default, which can lead to cross-site scripting
Created drupal tracking bugs for this issue: Affects: epel-all [bug 1888125] Affects: fedora-all [bug 1888124]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.