The SKT Skill Bar plugin for WordPress contains a stored XSS vulnerability (CWE-79) due to improper input sanitization during web page generation. This flaw allows an attacker with at least low privileges and requiring user interaction to inject malicious scripts that can execute in the context of other users' browsers. The vulnerability affects all versions up to 2.0. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, user interaction required, scope changed, and impacts confidentiality, integrity, and availability at a low level.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of users viewing the affected web pages, potentially leading to information disclosure, session hijacking, or other impacts on confidentiality, integrity, and availability. The impact is rated as medium severity based on the CVSS score of 6.5. There are no reports of active exploitation in the wild.

No official patch or remediation is currently available. Users should monitor the vendor's advisory channels for updates. Until a fix is released, consider restricting plugin usage to trusted users and limiting the ability to input untrusted data into the SKT Skill Bar plugin. Avoid exposing the plugin to untrusted users or inputs where possible.