The advisory explicitly identifies xip_client.html and xip_server.html in the Dojo library's src/io/ directory as the attack vectors. While the exact function names are unspecified, these files are directly tied to cross-domain communication (XIP) and input handling. XSS vulnerabilities in this context typically stem from unescaped user input being rendered in the DOM. Given the files' roles in IO operations and the lack of patched sanitization in versions 0.4.1-0.4.2, the handlers within these files are confidently flagged as vulnerable.