Threat intelligence

MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.11 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'stm_lms_courses_grid_display' Shortcode

CVE-2026-0559 · masterstudy-lms-learning-management-system

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Masterstudy Lms Learning Management System at a vulnerable version. How SiteRespond intelligence works

Vulnerability: MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.11 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'stm_lms_courses_grid_display' Shortcode
Affected software: masterstudy-lms-learning-management-system(Plugin)
Affected versions: ≤ 3.7.11
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-0559
Published: 13 February 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory b1146350-4491-4fa0-8b78-6dbc00903160). Methodology and redistribution notes

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