CVE-2026-83526 (GCVE-0-2026-83526)

Vulnerability from cvelistv5 – Published: 2026-10-10 05:30 – Updated: 2026-10-11 16:55
VLAI
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.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 16:43 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence CNA under the mitre root
CNA scorecard C 65/100 over 2313 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
foliovision FV Player 8 Affected: 0 , ≤ 8.1.7 (semver)
guessed Create a notification for this product.
Credits
Supakiad S. (m3ez)
Show details on NVD website
To clipboard 

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