{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "8.5.5"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "eb2e83dd9fc3f0eefa748ccc22bc4aed8ef85410"
            }
          ],
          "repo": "https://github.com/concretecms/concretecms",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "Concrete CMS (formerly concrete5) before 8.5.5 allows remote authenticated users to conduct XSS attacks via a crafted survey block. This requires at least Editor privileges.",
  "id": "CVE-2021-28145",
  "modified": "2026-03-13T21:49:47.874378387Z",
  "published": "2021-03-18T16:15:14.717Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://documentation.concrete5.org/developers/introduction/version-history/855-release-notes"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.concrete5.org/developers/security"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}