CVE-2026-78284 WordPress MasterStudy LMS plugin <= 3.7.42 - Arbitrary File Deletion vulnerability
Unauthenticated attackers can delete arbitrary files on the server via path traversal in the MasterStudy LMS plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78284?
CVE-2026-78284 is a high-severity path traversal vulnerability in Stylemix MasterStudy LMS, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unauthenticated Arbitrary File Deletion in MasterStudy LMS <= 3.7.42 versions.
Weakness: CWE-22
Which versions are affected by CVE-2026-78284?
How do I fix CVE-2026-78284?
No fix has been published for CVE-2026-78284 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-78284 being exploited?
There is no known exploitation of CVE-2026-78284 in the wild and no public exploit code.
Sources
Also known as GHSA-349j-547x-3rj9.