The advisory explicitly states the vulnerability stems from unescaped build descriptions in a view. Jenkins plugins typically use Jelly templates for HTML rendering, and XSS vulnerabilities in this context commonly occur when dynamic content (like build.description) is rendered without proper escaping. While the exact file path isn't provided, the pattern 'web/[ViewName]/index.jelly' follows Jenkins plugin conventions. The confidence is high because the vulnerability description directly maps to this templating pattern.