How severe is CVE-2025-13766?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Stylemix Masterstudy Lms Wordpress Plugin – For Online Courses And Education

CVE-2025-13766

The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to unauthorized modification and deletion of data due to a missing capability checks on multiple REST API endpoints in all versions…

Vulnerability class: Broken Access Control

EPSS: 0.000 (10.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Stylemix Masterstudy Lms Wordpress Plugin – For Online Courses And Education — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2025-13766?: CVE-2025-13766 is a medium-severity vulnerability in Stylemix Masterstudy Lms Wordpress Plugin – For Online Courses And Education, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-01-06.
How severe is CVE-2025-13766?: Medium severity. CVSS v3 base score is 5.4 out of 10.