CVE-2026-109984
Deferred Deferred - Pending Action

Stored XSS in FV Flowplayer Video Player WordPress Plugin

Publication date: 2026-10-30

Last updated on: 2026-10-30

Assigner: Wordfence

Description
The FV Flowplayer Video Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 7.5.55.7212 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the 'Parse Vimeo and YouTube links' option to be enabled and a site administrator to approve the comment containing the malicious shortcode; execution is then triggered for any visitor who interacts with the video player on that page.

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Meta Information

Published
2026-10-30
Last Modified
2026-10-30
Generated
2026-10-30
AI Q&A
2026-10-30
EPSS Evaluated
N/A
NVD
CVE-2026-109984
EUVD
EUVD-2026-114232

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
foliovision FV Flowplayer Video Player 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

The FV Flowplayer Video Player plugin for WordPress has a stored cross-site scripting vulnerability in the 'comment' parameter. This flaw exists in versions up to 7.5.55.7212 due to insufficient input sanitization and output escaping. Attackers can inject malicious scripts that execute when users interact with an infected video player on a page.

Detection Guidance

To detect this vulnerability, inspect WordPress sites using the FV Flowplayer Video Player plugin versions up to 7.5.55.7212. Check for malicious scripts in comments via the 'comment' parameter. Enable plugin logging and review user comments for unusual shortcodes or payloads. Use security plugins like Wordfence to scan for XSS patterns.

Impact Analysis

Unauthenticated attackers can inject arbitrary web scripts into pages. These scripts execute when visitors interact with the video player. This requires an administrator to approve the malicious comment and the 'Parse Vimeo and YouTube links' option to be enabled.

Mitigation Strategies

Immediately update the FV Flowplayer Video Player plugin to the latest version. Disable the 'Parse Vimeo and YouTube links' option if enabled. Review and remove any suspicious comments containing scripts. Implement a web application firewall to block XSS attempts. Monitor site traffic for unusual activity.

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