Craft is a platform for creating digital experiences. When you insert a payload inside a label name or instruction of an entry type, an cross-site scripting (XSS) happens in the quick post widget on the admin dashboard. This issue has been fixed in version 4.3.7.
Craft CMS 4.2.0.1 is affected by Cross Site Scripting (XSS) in the file src/web/assets/cp/src/js/BaseElementSelectInput.js and in specific on the line label: elementInfo.label.