CVE-2026-49773

FV Flowplayer Video Player < 7.5.51.7212 - Authenticated (Subscriber+) Stored Cross-Site Scripting

2026-06-04 00:00
Jakub Herman

Strategic Overview

Status
Patched in 7.5.51.7212
Affected Plugin
FV Flowplayer Video Player
Affected Version
< 7.5.51.7212
CVSS
6.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2026-49773
View all FV Flowplayer Video Player vulnerabilities

At a glance

CVE-2026-49773 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the FV Flowplayer Video Player WordPress plugin, affecting versions < 7.5.51.7212. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 7.5.51.7212; sites on affected versions should update now. Disclosed June 2026, reported by Jakub Herman.

Vulnerability Overview

The FV Flowplayer Video Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to 7.5.51.7212 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.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in FV Flowplayer Video Player < 7.5.51.7212 takes an account at Subscriber level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For FV Flowplayer Video Player the fix is 7.5.51.7212: builds < 7.5.51.7212 are affected, anything from 7.5.51.7212 onward is not.

Remediation

Update to version 7.5.51.7212, or a newer patched version

How does WordSec protect against this?

An attacker needs Subscriber access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: FV Flowplayer Video Player 7.5.51.7212 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-49773https://www.wordfence.com/threat-intel/vulnerabilities/id/d58fe116-0896-46b5-a120-d0fde9680ff1https://nvd.nist.gov/vuln/detail/CVE-2026-49773

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C