{"id":"CVE-2026-83526","title":"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","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 a…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-434"],"published":"2026-10-10","updated":"2026-10-10","sourceUpdated":"2026-10-10T06:16:43.340","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-83526","references":[{"url":"https://github.com/foliovision/fv-wordpress-flowplayer/releases/tag/8.1.8","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/editor.php#L36","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/frontend.php#L1211","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L105","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L148","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L181","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db-video.php#L855","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1102","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1173","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L46","label":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/5c75cb7b-1ebe-411c-8664-848d741e40d4?source=cve","label":"security@wordfence.com"}],"tags":["nvd"],"ingestedAt":"2026-10-10T06:24:42.870Z","slug":"CVE-2026-83526","body":"## Overview\n\nThe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}