CVE-2025-64209: Stylemixthemes Masterstudy

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Missing Authorization vulnerability in StylemixThemes Masterstudy masterstudy allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Masterstudy: from n/a through < 4.8.122.

Affected products

• Stylemixthemes Masterstudy: up to and including 4.8.122

Published 2025-12-18. Last modified 2026-10-05.