The provided vulnerability reports indicate an XSS flaw in backend user input handling, but no specific code snippets, commit diffs, or patching details are available. While the vulnerability likely exists in functions processing backend user input for HTML output (e.g., controller actions or template rendering), the lack of concrete technical details about the implementation makes it impossible to identify exact functions/paths with high confidence. TYPO3 extensions typically use Fluid templates with auto-escaping, so the vulnerability might involve unsafe raw output directives or unescaped parameters in backend modules, but this remains speculative without code evidence.