PT-2026-8063 · WordPress · Masterstudy Lms Wordpress Plugin

Dj + 1 · Published 2026-02-14 · Updated 2026-02-14 · CVE-2026-0559

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions MasterStudy LMS WordPress Plugin versions through 3.7.11

Description The MasterStudy LMS WordPress Plugin is susceptible to Stored Cross-Site Scripting. This is due to inadequate input sanitization and output escaping on user-supplied attributes within the 'stm lms courses grid display' shortcode. Authenticated attackers with contributor-level access or higher can inject malicious web scripts into pages. These scripts will then execute whenever a user accesses the compromised page.

Recommendations Update the MasterStudy LMS WordPress Plugin to a version later than 3.7.11.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-0559

Affected Products

Masterstudy Lms Wordpress Plugin

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-0559 · Security Note
• https://plugins.trac.wordpress.org/changeset/3435814/masterstudy-lms-learning-management-system · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/b1146350-4491-4fa0-8b78-6dbc00903160?source=cve · Note
• https://t.me/cveNotify/152029 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2022714496054173929 · Twitter Post
• https://twitter.com/CVEnew/status/2022567897470767550 · Twitter Post