This vulnerability in FooPlugins FooGallery (<= 3.1.11) involves improper neutralization of input during web page generation, resulting in stored cross-site scripting (XSS). An attacker could inject malicious scripts that are stored and later executed in the context of users viewing the affected pages. The CVSS 3.1 vector indicates network attack vector, low attack complexity, high privileges required, user interaction required, and impacts on confidentiality, integrity, and availability at a low to medium level.

Successful exploitation could allow an attacker with high privileges and requiring user interaction to execute arbitrary scripts in the context of other users, potentially leading to data disclosure, modification, or denial of service. The impact is rated medium with partial confidentiality, integrity, and availability impacts.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Users should monitor FooPlugins advisories for updates and consider restricting high privilege user input until a patch is available.