What the vulnerability does
01Description
The FV Flowplayer Video Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'video_player' shortcode 'align' attribute in all versions up to, and including, 7.5.51.7212 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
FV Flowplayer Video Player versions up to 7.5.51.7212 contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has changed scope, meaning injected code can affect other users or site functionality beyond the player component itself. An attacker with low-level site access can craft malicious input that executes in other users' browsers.
What an attacker can do
03Attacker Capabilities
Inject JavaScript that runs in other users' browsers, potentially stealing session tokens or performing actions on their behalf.
Potential impact on your site
04Site Impact
Authenticated users can inject malicious scripts affecting other visitors; site admins should update the plugin immediately.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
July 1, 2026
CVE published
