{"id":"CVE-2026-83526","aliases":["EUVD-2026-96092","GHSA-p776-3xx4-5fcg"],"status":"published","title":"FV Player 8 \u003c= 8.1.7 - Authenticated (Subscriber+) Arbitrary File Upload via videos[].fv_wp_flowplayer_field_src Parameter","description":"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.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00626,"percentile":0.50462,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2026-10-10T05:30:58Z","modified":"2026-10-30T02:30:51Z","products":[{"vendor":"foliovision","product":"fv player 8"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/5c75cb7b-1ebe-411c-8664-848d741e40d4?source=cve","tags":["web"]},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L105","tags":["web"]},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L148","tags":["web"]},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L181","tags":["web"]},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L46","tags":["web"]},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1102","tags":["web"]},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1173","tags":["web"]},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db-video.php#L855","tags":["web"]},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/editor.php#L36","tags":["web"]},{"url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/frontend.php#L1211","tags":["web"]},{"url":"https://github.com/foliovision/fv-wordpress-flowplayer/releases/tag/8.1.8","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83526","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-p776-3xx4-5fcg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83526.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-83526","title":"FV Player 8 \u003c= 8.1.7 - Authenticated (Subscriber+) Arbitrary File Upload via videos[].fv_wp_flowplayer_field_src Parameter","description":"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.","status":"published","published":"2026-10-10T05:30:58.064Z","modified":"2026-10-28T16:56:44.443Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T13:44:51.734189Z"}],"euvd":[{"id":"EUVD-2026-96092","description":"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.","status":"published","published":"2026-10-10T05:30:58Z","modified":"2026-10-28T16:56:44Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:59:19.960148Z"}],"ghsa":[{"id":"GHSA-p776-3xx4-5fcg","title":"The FV Player 8 plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to...","description":"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.","status":"published","published":"2026-10-10T06:30:59Z","modified":"2026-10-10T06:31:11Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T15:13:01.926366Z"}],"nvd":[{"id":"CVE-2026-83526","description":"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.","status":"published","published":"2026-10-10T06:16:43.34Z","modified":"2026-10-28T17:18:44.107Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:12:55.473789Z"}],"osv":[{"id":"CVE-2026-83526","title":"FV Player 8 \u003c= 8.1.7 - Authenticated (Subscriber+) Arbitrary File Upload via videos[].fv_wp_flowplayer_field_src Parameter","description":"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.","status":"published","published":"2026-10-10T05:30:58.064Z","modified":"2026-10-30T02:30:51.467574856Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T15:45:18.482949Z"}]}}