MasterStudy LMS Pro: Dangerous file upload
MasterStudy LMS Pro is affected by dangerous file upload. Exploitation requires an authenticated subscriber account. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise.
- Component
- MasterStudy LMS Pro
- Plugin slug
masterstudy-lms-pro- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- May 28, 2025
This CVE was published May 28, 2025 and is one of 2 known issues for this plugin.
Update, patch or deactivate.
No fixed release is identified. Update MasterStudy LMS Pro when a confirmed fixed release becomes available; until then, disable and remove it when the site's risk warrants.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H