FV Player 8 <= 8.1.7 - Authenticated (Subscriber+) Arbitrary File Upload via videos[].fv_wp_flowplayer_field_src Parameter

{
  "id": "a4b4594daf529ab919714c321f39656204abc34e73008749b39ca30256093381",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-83526",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "FV Player 8 <= 8.1.7 - Authenticated (Subscriber+) Arbitrary File Upload via videos[].fv_wp_flowplayer_field_src Parameter",
    "summary": "The FV Player 8 plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 8.1.7 via the check_mimetype function. This is due to insufficient file type validation in check_mimetype(), which writes attacker-supplied remote file content to the public uploads directory before any MIME or extension check, combined with a missing capability check on new player creation. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. This requires successfully exploiting a race condition, and is only exploitable if the '[fvplayer_editor]' shortcode is present, or the \"Enable profile videos\" setting is enabled.",
    "evidence": "cve:CVE-2026-83526",
    "products": [
      {
        "name": {
          "value": "FV Player 8",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-83526",
      "aliases": [
        "CVE-2026-83526"
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
          }
        }
      ],
      "affected": [
        {
          "vendor": "foliovision",
          "product": "FV Player 8",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "semver",
              "lessThanOrEqual": "8.1.7"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-28T16:56:44.443Z",
      "provider": "cve",
      "references": [
        "https://www.wordfence.com/threat-intel/vulnerabilities/id/5c75cb7b-1ebe-411c-8664-848d741e40d4?source=cve",
        "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L105",
        "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L148",
        "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L181",
        "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L46",
        "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1102",
        "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1173",
        "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db-video.php#L855",
        "https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/editor.php#L36",
        "https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/frontend.php#L1211",
        "https://github.com/foliovision/fv-wordpress-flowplayer/releases/tag/8.1.8"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-83526",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-11T16:43:03.315494Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-11T16:55:17.940Z"
            }
          }
        ],
        "cna": {
          "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
          "shortName": "Wordfence",
          "dateUpdated": "2026-10-28T16:56:44.443Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-83526",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 462541,
  "published_at": "2026-10-10T05:30:58.064+00:00"
}