MasterStudy LMS <= 3.6.20 — Authenticated (Subscriber+) Race Condition to Multiple Reviews
CVE-2025-59577Published · Updated Action summary
Affected: ≤3.6.20Update to 3.6.21 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
MasterStudy LMS WordPress Plugin – for Online Courses and Education masterstudy-lms-learning-management-system
- Affected≤ 3.6.20
- Patched in3.6.21
Update to 3.6.21 or newer.
You are affected if you run ≤ 3.6.20. Version 3.6.21 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under MasterStudy LMS WordPress Plugin – for Online Courses and Education.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 3.6.21, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch MasterStudy LMS WordPress Plugin – for Online Courses and Education to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Bibek Dhakal.
The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to a race condition in all versions up to, and including, 3.6.20. This makes it possible for authenticated attackers, with Subscriber-level access and above, to leave multiple reviews on a course.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in MasterStudy LMS WordPress Plugin – for Online Courses and Education
All 60| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.4 | Authenticated (Subscriber+) Arbitrary Shortcode Exeuction ≤3.7.56Update to 3.7.57 | CVE-2026-119478 | |
| High7.5 | Authenticated (Subscriber+) PHP Object Injection ≤3.7.55Update to 3.7.56 | CVE-2026-118090 | |
| Medium4.3 | Missing Authorization ≤3.7.55Update to 3.7.56 | CVE-2026-118092 | |
| Medium4.3 | Missing Authorization ≤3.7.49Update to 3.7.50 | CVE-2026-80069 | |
| Medium4.3 | Authenticated (Custom+) Path Traversal ≤3.7.49Update to 3.7.50 | CVE-2026-80067 |
- Medium5.4Authenticated (Subscriber+) Arbitrary Shortcode Exeuction
≤3.7.56Update to 3.7.57
- High7.5Authenticated (Subscriber+) PHP Object Injection
≤3.7.55Update to 3.7.56
- Medium4.3Missing Authorization
≤3.7.55Update to 3.7.56
- Medium4.3Missing Authorization
≤3.7.49Update to 3.7.50
- Medium4.3Authenticated (Custom+) Path Traversal
≤3.7.49Update to 3.7.50
Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.