{"id":"CVE-2023-44766","aliases":["GHSA-437p-jfm4-2387"],"url":"https://o3.security/vulnerability/CVE-2023-44766","summary":"ConcreteCMS Cross-site Scripting vulnerability","details":"A Cross Site Scripting (XSS) vulnerability in Concrete CMS v.9.2.1 allows an attacker to execute arbitrary code via a crafted script to the SEO - Extra from Page Settings. NOTE: the vendor disputes this because this SEO-related header change can only be made by an admin, and allowing an admin to place JavaScript there is an intentional customization feature.","published":"2023-10-06T00:00:00Z","modified":"2026-07-15T01:48:51.707138687Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"concrete5/concrete5","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/44xxx/CVE-2023-44766.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-44766"},{"type":"ADVISORY","url":"https://www.concretecms.org/about/project-news/security/security-advisory-2023-10-31-concrete-cms-rejects-cve-2023-44760-and-cve-2023-44766"},{"type":"PACKAGE","url":"https://github.com/sromanhu/ConcreteCMS-Stored-XSS---SEO"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:51.707138687Z"}}