DOMPurify: DOMPurify: Cross-Site Scripting via unsanitized DOM elements from different realms

A flaw was found in DOMPurify. When DOM elements originating from a different window or realm, such as an iframe's contentDocument, are processed in INPLACE mode, DOMPurify fails to properly sanitize them. This oversight allows an attacker to inject and execute Cross-Site Scripting XSS payloads,...