{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "9.4.8"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "455229307c0cb421fa6ef7e9aa9f74f0863c4788"
            }
          ],
          "repo": "https://github.com/concretecms/concretecms",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "In Concrete CMS below version 9.4.8, a user with permission to edit a page with element Legacy form can perform a stored XSS attack towards high-privilege accounts via the Question field. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 4.8 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N Thanks minhnn42, namdi and quanlna2 from VCSLab-Viettel Cyber Security for reporting.",
  "id": "CVE-2026-3240",
  "modified": "2026-03-10T21:52:31.231111120Z",
  "published": "2026-03-04T03:16:04.940Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://github.com/concretecms/concretecms/pull/12826"
    },
    {
      "type": "FIX",
      "url": "https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}