{"action":"Upgrade concrete5/concrete5 to 9.1.0 or later.","affected":[{"fixed":"9.1.0","introduced":"0"}],"component":"concrete5/concrete5","cve_ids":["CVE-2023-28820"],"ecosystem":"Packagist","epss":0.00393,"exploited":false,"fixed_versions":["9.1.0"],"ghsa_id":"GHSA-fgxj-g7x3-85cq","id":"tcs_01M5KF1SY8V2XAYFZ1KT51SR37","modified_at":"2026-09-10T03:50:00.793662293Z","published_at":"2023-04-28T15:30:19Z","references":["https://osv.dev/vulnerability/GHSA-fgxj-g7x3-85cq","https://nvd.nist.gov/vuln/detail/CVE-2023-28820","https://github.com/concretecms/concretecms","https://github.com/concretecms/concretecms/releases","https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20"],"severity":{"label":"low","score":2},"sources":[{"source":"osv","source_id":"GHSA-fgxj-g7x3-85cq","url":"https://osv.dev/vulnerability/GHSA-fgxj-g7x3-85cq"}],"summary":"Stored cross site scripting in RSS displayer"}