CVE-2026-83526 FV Player - Unrestricted File Upload

FV Player 8 plugin for WordPress <= 8.1.7 contains an arbitrary file upload vulnerability caused by insufficient file type validation and missing capability checks in check_mimetype(), letting authenticated attackers with subscriber-level access upload executable files, exploit requires exploiting a race condition.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.64% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Unrestricted File Upload
Impact
Remote Code Execution, Unrestricted File Upload
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
10 October 2026
Updated
15 October 2026
Weakness
CWE-434

Vendor fix

Update to the latest version beyond 8.1.7.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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