A reflected cross-site scripting (XSS) vulnerability in the component /ui/diagnostics/log/core/ of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to inject arbitrary JavaScript via the URL path.
https://logicaltrust.net/blog/2023/08/opnsense.html
https://github.com/opnsense/core/commit/d1f350ce70e477adc86d445f5cda9b24f9ff0168