CVE-2025-59576
📋 TL;DR
This CVE describes a missing authorization vulnerability in the MasterStudy LMS WordPress plugin that allows attackers to bypass access controls and perform unauthorized actions. The vulnerability affects all versions up to 3.6.20, potentially impacting any WordPress site using this learning management system plugin.
💻 Affected Systems
- MasterStudy LMS WordPress Plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could modify course content, access sensitive student data, manipulate user roles, or compromise the entire WordPress installation through privilege escalation.
Likely Case
Unauthorized users accessing restricted functionality such as viewing/modifying courses, accessing student information, or manipulating plugin settings without proper permissions.
If Mitigated
With proper access controls and authentication mechanisms in place, only authorized users can access LMS functionality according to their assigned roles.
🎯 Exploit Status
Exploitation requires understanding of WordPress plugin structure and access control bypass techniques. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 3.6.21 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find MasterStudy LMS plugin. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and manually update.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
WordPressDisable the MasterStudy LMS plugin until patched to prevent exploitation
wp plugin deactivate masterstudy-lms-learning-management-system
Access Restriction via Web Application Firewall
allImplement WAF rules to restrict access to MasterStudy LMS endpoints
🧯 If You Can't Patch
- Implement strict role-based access controls and audit all user permissions
- Monitor logs for unauthorized access attempts to MasterStudy LMS functionality
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → MasterStudy LMS version. If version is 3.6.20 or lower, you are vulnerable.Check Version:
wp plugin get masterstudy-lms-learning-management-system --field=versionVerify Fix Applied:
After updating, verify plugin version shows 3.6.21 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /wp-content/plugins/masterstudy-lms/ endpoints
- Multiple failed authorization attempts followed by successful access to restricted LMS functions
- User role changes or permission escalations without proper audit trail
Network Indicators:
- Unusual API calls to MasterStudy LMS endpoints from unauthorized IPs
- Traffic patterns showing access to admin functions from non-admin users
SIEM Query:
source="wordpress.log" AND ("masterstudy-lms" OR "masterstudy_lms") AND ("unauthorized" OR "access denied" OR "permission" OR "role")