CVE-2026-81026
MasterStudy LMS < 3.7.40 - Unauthenticated Payment Bypass via PayPal IPN
- State
- Published
- Severity
- 4.8 Medium
- Published
- Aug 29, 2026
- Updated
- Aug 30, 2026
- Reserved
- Aug 26, 2026
Description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.40 does not verify the amount, receiver, currency or status of a payment notification before marking the corresponding order completed, allowing unauthenticated users to complete full-price orders and gain access to paid content by paying only a token amount.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.8 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N | CISA-ADP |
Weaknesses
- CWE-284 Improper Access Control
Affected Products
| Product | Versions |
|---|---|
MasterStudy LMS WordPress PluginUnknown |
|
References
- https://wpscan.com/vulnerability/6677b55c-5d51-4849-ac67-849a500aefe2/exploitvdb-entrytechnical-description
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