CVE-2026-86461
8.8HighPublished 14 Oct 2026 · NVD status: Deferred · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Impact
- Full C/I/A compromise
- Weakness
- CWE-434
Impact
Authenticated users with subscriber access or higher can achieve remote code execution by uploading executable files. They need an account on the WordPress site and the plugin's 'profile videos on bio' setting must be enabled to leak the upload nonce.
Root cause
The check_mimetype function improperly validates file types and bypasses standard WordPress upload security routines, allowing arbitrary remote file contents to be written with executable extensions.
Affected systems
FV Flowplayer Video Player plugin for WordPress versions up to, and including, 7.5.54.7212
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Fix & remediation
Upgrade FV Flowplayer Video Player to a version newer than 7.5.54.7212. As an immediate mitigation, disable the 'profile videos on bio' setting in the plugin configuration to prevent subscriber accounts from obtaining the required nonce.
$ wp plugin update fv-wordpress-flowplayerAI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
The FV Flowplayer Video Player plugin for WordPress is vulnerable to Limited Arbitrary File Upload in all versions up to, and including, 7.5.54.7212 via the check_mimetype function. This is due to incomplete file type validation in the check_mimetype function — while some extension checking is present, it can be bypassed, allowing attacker-supplied remote file content to be written with insufficient extension enforcement and no MIME check or WordPress upload helper. 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. Exploitation requires the plugin's 'profile videos on bio' option to be enabled, as this causes the nonce to be emitted on the subscriber-accessible profile page; without this setting, authenticated users below Editor cannot obtain the required nonce.