Description
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.
Remediation
References
Related Vulnerabilities
WordPress Plugin GiveWP-Donation and Fundraising Platform Security Bypass (2.5.4)
WordPress Plugin WordPress Poll Multiple SQL Injection and Security Bypass Vulnerabilities (34.04)
PHP NULL Pointer Dereference Vulnerability (CVE-2018-19935)
WordPress 2.3.3 Directory Traversal Vulnerability (0.6.2 - 2.3.3)