CVE-2026-121515
Deferred Deferred - Pending Action

Stored XSS in FV Flowplayer Video Player WordPress Plugin

Publication date: 2026-11-07

Last updated on: 2026-11-07

Assigner: Wordfence

Description
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, 7.5.56.7212 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 the injected comment must be approved before the script executes for site visitors.

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Meta Information

Published
2026-11-07
Last Modified
2026-11-07
Generated
2026-11-07
AI Q&A
2026-11-07
EPSS Evaluated
N/A
NVD
CVE-2026-121515
EUVD
EUVD-2026-118567

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
foliovision FV Flowplayer Video Player From 0 (inc) to 7.5.56.7212 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

The FV Flowplayer Video Player plugin for WordPress has a stored cross-site scripting (XSS) vulnerability in versions up to 7.5.56.7212. It allows unauthenticated attackers to inject malicious scripts via the 'comment' parameter due to insufficient input sanitization and output escaping. The attack requires the 'Parse Vimeo and YouTube links' option to be enabled, and the injected comment must be approved before execution.

Detection Guidance

Check WordPress sites using the FV Flowplayer Video Player plugin for versions up to 7.5.56.7212. Inspect comments for suspicious scripts or payloads. Enable plugin logging if available. Review server logs for unusual activity related to the 'comment' parameter.

Impact Analysis

This vulnerability allows attackers to inject malicious scripts into your WordPress site. If a user visits an affected page, the injected script could steal cookies, session tokens, or sensitive data. It may also redirect users to phishing sites or perform actions on their behalf without consent.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection principles and HIPAA's security requirements. It may result in data breaches, exposing personal or health information, leading to legal penalties and reputational damage.

Mitigation Strategies

Update the FV Flowplayer Video Player plugin to the latest version. Disable the 'Parse Vimeo and YouTube links' option if enabled. Implement input sanitization for user comments. Monitor comments for unauthorized scripts before approval.

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