{"id":"CVE-2023-44766","aliases":["EUVD-2023-2636","GHSA-437p-jfm4-2387"],"status":"disputed","title":"ConcreteCMS Cross-site Scripting vulnerability","description":"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.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00595,"percentile":0.48795,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-79"],"published":"2023-10-06T00:00:00Z","modified":"2026-10-28T02:31:08Z","exploits":[{"source":"pocgithub","id":"sromanhu/CVE-2023-44766_ConcreteCMS-Stored-XSS---SEO","title":"sromanhu/CVE-2023-44766_ConcreteCMS-Stored-XSS---SEO","date":"2023-09-25","url":"https://github.com/sromanhu/CVE-2023-44766_ConcreteCMS-Stored-XSS---SEO"}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"concrete5/concrete5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"9.2.1"}]}]},{"source":"osv","ecosystem":"Packagist","package":"concrete5/concrete5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"9.2.1"}]}],"versions":["8.0","8.0.1","8.0.2","8.0.3","8.1.0","8.2.0","8.2.0RC2","8.2.1","8.3.0","8.3.1","8.3.2","8.4.0","8.4.0RC3","8.4.0RC4","8.4.1","8.4.2","8.4.3","8.4.4","8.4.5","8.5.0","8.5.0RC1","8.5.0RC2","8.5.1","8.5.10","8.5.11","8.5.12","8.5.13","8.5.14","8.5.15","8.5.16","8.5.17","8.5.18","8.5.19","8.5.2","8.5.20","8.5.21","8.5.3","8.5.4","8.5.5","8.5.6","8.5.6RC1","8.5.7","8.5.8","8.5.9","9.0.0","9.0.0RC1","9.0.0RC3","9.0.0RC4","9.0.1","9.0.2","9.1.0","9.1.1","9.1.2","9.1.3","9.2.0","9.2.0RC2","9.2.1"]}],"products":[{"vendor":"concretecms","product":"concrete_cms"}],"references":[{"url":"https://github.com/sromanhu/ConcreteCMS-Stored-XSS---SEO","tags":["x_transferred","Exploit","package","web"]},{"url":"https://www.concretecms.org/about/project-news/security/security-advisory-2023-10-31-concrete-cms-rejects-cve-2023-44760-and-cve-2023-44766","tags":["x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-44766","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-437p-jfm4-2387"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/44xxx/CVE-2023-44766.json","tags":["advisory"]},{"url":"https://github.com/concretecms/concretecms","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2023-44766","description":"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.","status":"disputed","published":"2023-10-06T00:00:00Z","modified":"2024-08-02T20:07:33.443Z","updated_at":"2026-11-02T14:35:21.612665Z"}],"euvd":[{"id":"EUVD-2023-2636","description":"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.","status":"published","published":"2023-10-06T00:00:00Z","modified":"2024-08-02T20:07:33Z","updated_at":"2026-11-03T03:49:59.530903Z"}],"ghsa":[{"id":"GHSA-437p-jfm4-2387","title":"ConcreteCMS Cross-site Scripting vulnerability","description":"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.","status":"published","published":"2023-10-06T15:30:20Z","modified":"2023-11-16T19:44:56Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:22.040291Z"}],"nvd":[{"id":"CVE-2023-44766","description":"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.","status":"disputed","published":"2023-10-06T13:15:12.977Z","modified":"2026-06-17T06:27:47.33Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:08:36.656095Z"}],"osv":[{"id":"GHSA-437p-jfm4-2387","title":"ConcreteCMS Cross-site Scripting vulnerability","description":"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.","status":"published","published":"2023-10-06T15:30:20Z","modified":"2026-09-10T03:49:24.713432685Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:36.434231Z"},{"id":"CVE-2023-44766","description":"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.","status":"published","published":"2023-10-06T00:00:00Z","modified":"2026-10-28T02:31:08.89216403Z","updated_at":"2026-11-02T15:44:33.792101Z"}]}}