Concrete CMS (previously concrete5) before 9.1 is vulnerable to stored XSS in RSS Displayer via the href attribute because the link element input was not sanitized.
{ "versions": [ { "introduced": "0" }, { "fixed": "9.1.0" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-28820.json"