Basecamp: Stored XSS on Trix Editor version latest (2.1.16) - Sanitizer Bypass

A vulnerability was discovered in Trix Editor version 2.1.16 that allowed for a Stored Cross-Site Scripting XSS attack. The vulnerability arose from an unsafe interaction between Trix's custom DOMPurify configuration and its document serialization logic. The issue was caused by Trix's use of the...