A cross-site scripting (XSS) vulnerability in TinyMCE 5.2.1 and earlier allows remote attackers to inject arbitrary web script when configured in classic editing mode.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12648
Reference (s):
- https://labs.bishopfox.com/advisories/tinymce-version-5.2.1