MasterStudy LMS Pro <= 4.7.0 - Authenticated (Subscriber+) Arbitrary File Upload
Vulnerability Description
The MasterStudy LMS Pro plugin for WordPress is vulnerable to arbitrary file uploads due to a missing file type validation in the stm_lms_add_assignment_attachment function in all versions up to, and including, 4.7.0. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload arbitrary files on the affected site's server, which may make remote code execution possible.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-4800
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Friderika Baranyai
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c170a228-4abd-4ee6-ba37-bdcde1cb7fc5?source=cve
- https://stylemixthemes.com/wordpress-lms-plugin/
- https://themeforest.net/item/masterstudy-education-center-wordpress-theme/12170274/
- https://docs.stylemixthemes.com/masterstudy-lms/changelog-pro-version
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