The Tutor LMS plugin for WordPress suffers from a stored XSS vulnerability (CWE-79) due to improper neutralization of input in the 'tutor_instructor_list' shortcode. This allows authenticated users with contributor or higher privileges to inject arbitrary JavaScript code that executes in the context of other users viewing the injected content. The issue affects all versions up to and including 2.6.2. The CVSS 3.1 base score is 5.4, reflecting network attack vector, low attack complexity, and privileges required at the contributor level. No patch or official fix has been documented in the provided data.

An attacker with contributor-level access can inject persistent malicious scripts into pages via the vulnerable shortcode. This can lead to limited confidentiality and integrity impacts, such as theft of user session data or manipulation of page content when other users access the infected pages. There is no indication of availability impact. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or limiting use of the 'tutor_instructor_list' shortcode to reduce exposure.