CVE-2026-5060 Missing authorization in MasterStudy LMS WordPress Plugin – for Online Courses and Education
Authenticated instructors can delete arbitrary attachments belonging to any user due to missing ownership validation in the MasterStudy LMS plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5060?
CVE-2026-5060 is a medium-severity missing authorization vulnerability in stylemix MasterStudy LMS WordPress Plugin – for Online Courses and Education, published on 29 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14. This is due to the `stm_lms_delete_cover()` function lacking ownership validation on the `file_id` parameter before passing it to `wp_delete_attachment()`. This makes it possible for authenticated attackers, with Instructor-level access and above, to delete arbitrary attachments belonging to any user by enumerating sequential attachment IDs.
Weakness: CWE-639
Which versions are affected by CVE-2026-5060?
How do I fix CVE-2026-5060?
No fix has been published for CVE-2026-5060 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-5060 being exploited?
There is no known exploitation of CVE-2026-5060 in the wild and no public exploit code.
Sources
Also known as GHSA-3wr4-2wwf-jjxw.