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, 7.5.55.7212 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 a site administrator to approve the comment containing the malicious shortcode; execution is then triggered for any visitor who interacts with the video player on that page.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 7
https://github.com/foliovision/fv-wordpress-flowplayer/commit/62aaa66a560923a4b…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/contro…
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https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/flowpl…
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https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/models…
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https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/models…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/models…
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https://www.wordfence.com/threat-intel/vulnerabilities/id/c7ce7b9d-7284-4a31-b6…
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