CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. CKEditor4 prior to version 4.18.0 contains a vulnerability in the `dialog` plugin. The vulnerability allows abuse of a dialog input validator regular expression, which can cause a significant performance drop resulting in a browser tab freeze. A patch is available in version 4.18.0. There are currently no known workarounds. https://ckeditor.com/cke4/release/CKEditor-4.18.0 https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-f6rf-9m92-x2hh https://www.drupal.org/sa-core-2022-005
Created ckeditor tracking bugs for this issue: Affects: epel-7 [bug 2065301] Affects: fedora-all [bug 2065300]
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.