{"id":"CVE-2026-83526","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-83526","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…","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.","published":"2026-10-10T06:16:43.340","modified":"2026-10-10T06:16:43.340","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-10T06:16:43.340"}}