Auth bypass in Masterstudy Lms WordPress Plugin
CVE-2026-88846
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not check whether user registration is enabled on the site before creating an account through one of its front-end registration flows, allowing unauthenticated users to create accounts, and be logged into them, on sites where registration has been deliberately disabled.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.001 (2.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- Masterstudy Lms WordPress Plugin
Weakness classification (CWE)
References
- wpscan.com/vulnerability/57b0dd3f-bd83-4fb7-b98d-c999026910cd/ (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-88846?
- CVE-2026-88846 is a medium-severity vulnerability in Masterstudy Lms WordPress Plugin, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-09-24.
- How severe is CVE-2026-88846?
- Medium severity. CVSS v3 base score is 5.3 out of 10.