Security advisory

{
  "id": "2677ac494399e6c3be751c476bcbe25248a03e0c3cec203109be7a2100c06771",
  "url": "https://osv.dev/vulnerability/CVE-2020-17451",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-17451",
    "summary": "flatCore before 1.5.7 allows XSS by an admin via the acp/acp.php?tn=pages&sub=edit&editpage=1 page_linkname, page_title, page_content, or page_extracontent parameter, or the acp/acp.php?tn=system&sub=sys_pref prefs_pagename, prefs_pagetitle, or prefs_pagesubtitle parameter.",
    "evidence": "osv:CVE-2020-17451",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-17451",
      "aliases": [
        "CVE-2020-17451"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/flatcore/flatcore-cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "fe1ec750c644738f8e353b5b12f9bf5b87703739"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:flatcore:flatcore:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.5.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.5.5",
            "v1.5.4",
            "v1.5.3",
            "v1.5",
            "1.4.7.4",
            "1.4.7-b82",
            "1.4.7-b81",
            "1.4.7-b80",
            "1.4.7-b78",
            "1.4.7-b76",
            "1.4.7-b75",
            "1.4.7-b74",
            "1.4.7",
            "v1.4.6",
            "v1.4.5",
            "v1.4",
            "v1.4beta4",
            "v1.4beta3",
            "v1.4beta2",
            "v1.4beta1",
            "v1.3",
            "v1.1.1",
            "v1.1",
            "v1.0",
            "Version1.0",
            "ReleaseCandidate4",
            "RC4v2",
            "RC4v1",
            "ReleaseCandidate3",
            "ReleaseCandidate2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-17451.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:02.737143654Z",
      "provider": "osv",
      "references": [
        "https://lists.openwall.net/full-disclosure/2020/08/07/1",
        "https://sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-flatcore-cms/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-17451",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440085,
  "published_at": "2020-08-09T19:15:11.953+00:00"
}