CVE-2026-86461 FV Flowplayer Video Player <= 7.5.54.7212 - Authenticated (Subscriber+) Arbitrary File Upload via 'video_url' Parameter
Authenticated subscribers can upload executable files via a bypassed validation check, potentially leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86461?
CVE-2026-86461 is a high-severity vulnerability in foliovision FV Flowplayer Video Player, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-434
Which versions are affected by CVE-2026-86461?
How do I fix CVE-2026-86461?
No fix has been published for CVE-2026-86461 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-86461 being exploited?
There is no known exploitation of CVE-2026-86461 in the wild and no public exploit code.
Sources
Also known as GHSA-8m9c-v3qh-mr2h.