CVE-2023-4520
MediumCVSS 5.4Exploitation Probability (EPSS)
Low risk37th percentile - higher than 37% of all known CVEs
Summary
The FV Flowplayer Video Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) and Arbitrary Usermeta Update. These issues arise from insufficient input sanitization and output escaping in the 'save' function.
Risk Assessment
Unauthenticated attackers can inject arbitrary web scripts that will execute whenever a user accesses the infected page, potentially leading to data theft or account takeover.
Recommendation
It is recommended to update the plugin to the latest version to mitigate these vulnerabilities and implement additional security measures such as input data filtering.
Original NVD description (English source)
The FV Flowplayer Video Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘_fv_player_user_video’ parameter saved via the 'save' function hooked via init, and the plugin is also vulnerable to Arbitrary Usermeta Update via the 'save' function in versions up to, and including, 7.5.37.7212 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, and makes it possible to update the user metas arbitrarily, but the meta value can only be a string.