{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "8.1.7"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "cc108f5affede691af0b985444071de199d94637"
            }
          ],
          "repo": "https://github.com/foliovision/fv-wordpress-flowplayer",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Wordfence",
    "cwe_ids": [
      "CWE-434"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83526.json"
  },
  "details": "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.",
  "id": "CVE-2026-83526",
  "modified": "2026-10-12T02:30:18.069689551Z",
  "published": "2026-10-10T05:30:58.064Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/foliovision/fv-wordpress-flowplayer/releases/tag/8.1.8"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/editor.php#L36"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/frontend.php#L1211"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L105"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L148"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L181"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db-video.php#L855"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1102"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1173"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L46"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/5c75cb7b-1ebe-411c-8664-848d741e40d4?source=cve"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83526.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-83526"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "FV Player 8 \u003c= 8.1.7 - Authenticated (Subscriber+) Arbitrary File Upload via videos[].fv_wp_flowplayer_field_src Parameter"
}