XSS in Foliovision Fv Flowplayer Video Player
CVE-2026-109984
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/c7ce7b9d-7284-4a31-b60d-aa66b…
- plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/flowplayer/mod…
- plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/models/flowpla…
- plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/models/flowpla…
- plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/models/flowpla…
- plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/controller/fro…
- github.com/foliovision/fv-wordpress-flowplayer/commit/62aaa66a560923a4ba75f5d0a…
Frequently asked questions
- What is CVE-2026-109984?
- CVE-2026-109984 is a medium-severity vulnerability in Foliovision Fv Flowplayer Video Player, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-10-30.
- How severe is CVE-2026-109984?
- Medium severity. CVSS v3 base score is 5.4 out of 10.