dashboards-reporting (aka Dashboards Reports) before 2.19.0.0, as shipped in OpenSearch before 2.19, allows XSS because Markdown is not sanitized when previewing a header or footer.
https://opensearch.org/releases.html
https://github.com/opensearch-project/dashboards-reporting/pull/476
https://github.com/opensearch-project/dashboards-reporting/compare/2.18.0.0...2.19.0.0
https://github.com/Jflye/CVE-2024-54160--Opensearch-HTML-Injection