# CVE-2026-109984: FV Flowplayer Video Player stored XSS via comment parameter

Source: https://junglewise.ai/threats/cve-2026-109984-the-fv-flowplayer-video-player-plugin-for-wordpress-is  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-30. Updated: 2026-10-30  
License: CC BY 4.0 with a link back

CVE-2026-109984 · Severity: medium · CVSS 5.4 · Published 2026-10-30

The FV Flowplayer Video Player plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in its comment handling feature. An attacker can inject malicious scripts that execute when site visitors view a page containing an approved comment with the vulnerable video player. This requires the plugin's "Parse Vimeo and YouTube links" option to be enabled and administrator approval of the malicious comment, but then exposes all visitors to the injected code.

Technologies: [FolioVision FV Flowplayer Video Player](https://junglewise.ai/threats/technologies/fv-flowplayer-video-player). Vendors: [FolioVision](https://junglewise.ai/threats/vendors/foliovision).

## Quick answers

**Is CVE-2026-109984 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-109984 being exploited in the wild.

**How severe is CVE-2026-109984?** Medium severity, with a CVSS score of 5.4, published 30 October 2026.

**Which products and versions are affected?** FolioVision FV Flowplayer Video Player up to and including 7.5.55.7212.

**Is there a fix for CVE-2026-109984?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-109984 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-109984?** Check whether you run FolioVision FV Flowplayer Video Player at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The plugin fails to properly sanitize the 'comment' parameter when processing shortcodes in comments, allowing unauthenticated attackers to inject arbitrary HTML and JavaScript. The vulnerability exists in the comment text processing function where shortcode attributes containing HTML (such as ad code and popup parameters) are decoded and output without escaping. An attacker must craft a comment containing a malicious shortcode; once approved by an administrator, the injected script executes in the browser of any visitor who interacts with the video player on that page.

## Affected products

- Foliovision FV Flowplayer Video Player up to and including 7.5.55.7212

## Timeline

- 2026-10-30: disclosed

## References

- [https://github.com/foliovision/fv-wordpress-flowplayer/commit/62aaa66a560923a4ba75f5d0a557744599345d35](https://github.com/foliovision/fv-wordpress-flowplayer/commit/62aaa66a560923a4ba75f5d0a557744599345d35)
- [https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/controller/frontend.php](https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/controller/frontend.php)

## Related threats

- [FolioVision FV Flowplayer Video Player stored XSS](https://junglewise.ai/threats/cve-2026-121764-improper-neutralization-of-input-during-web-page-generation)
- [FV Flowplayer Video Player stored XSS in comment parsing](https://junglewise.ai/threats/cve-2026-117525-the-fv-flowplayer-video-player-wordpress-plugin-before-7-5-57)
- [FV Flowplayer Video Player stored XSS in comment parameter](https://junglewise.ai/threats/cve-2026-121515-the-fv-flowplayer-video-player-plugin-for-wordpress-is)
- [FV Flowplayer Video Player stored XSS in profile videos](https://junglewise.ai/threats/cve-2026-110533-the-fv-flowplayer-video-player-plugin-for-wordpress-is)
- [FV Flowplayer Video Player stored XSS via align attribute](https://junglewise.ai/threats/cve-2026-110001-the-fv-flowplayer-video-player-plugin-for-wordpress-is)