---
id: "CVE-2026-110533"
kind: "vulnerability"
aliases: ["CVE-2026-110533"]
title: "FV Flowplayer WordPress plugin: stored XSS via profile video upload"
severity: "medium"
cvss: 6.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["fv-flowplayer", "package", "wordpress"]
not_affected_if: ["no-subscriber-accounts", "plugin-not-installed", "profile-video-upload-disabled"]
published_at: "2026-10-30T18:17:20+00:00"
first_seen_at: "2026-10-30T18:55:29+00:00"
updated_at: "2026-10-30T18:57:06+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110533", "first_seen_at": "2026-10-30T18:55:29+00:00"}]
---

# FV Flowplayer WordPress plugin: stored XSS via profile video upload

The FV Flowplayer Video Player WordPress plugin does not sanitize the fv_player_videos user video parameter, so a logged-in subscriber can store script that runs when other users open the affected page. An attacker gets script execution in the browser of whoever views the injected page, including administrators.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version of the FV Flowplayer Video Player plugin in the WordPress admin plugins list; versions up to and including `7.5.55.7212` are affected.
- Check whether the setting "Allow visitors to upload videos to their profile" (profile_videos_enable_bio) is enabled.

## Timeline

- 2026-10-30T18:55:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-110533

## From the sources

The FV Flowplayer Video Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'fv_player_videos[_fv_player_user_video][]' 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 authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires an administrator to have enabled the "Allow visitors to upload videos to their profile" (profile_videos_enable_bio) setting before Subscriber-level users can submit profile videos.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_