CVE-2026-88764
Simple Membership < 4.7.8 - Subscriber+ Membership Level Escalation via PayPal Standard subsc_ref
- State
- Published
- Severity
- 5.4 Medium
- Published
- Sep 13, 2026
- Updated
- Sep 13, 2026
- Reserved
- Sep 10, 2026
Description
The Simple Membership WordPress plugin before 4.7.8 does not validate that the membership level supplied in a PayPal payment notification matches the level configured for the paid payment button, allowing members to pay for a lower-priced membership while being granted a higher, more privileged membership level.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N | CISA-ADP |
Weaknesses
- CWE-269 Improper Privilege Management
Affected Products
| Product | Versions |
|---|---|
Simple MembershipUnknown |
|
References
- https://wpscan.com/vulnerability/54fdf46e-0385-40a3-b3bc-a862dc0fb03e/exploitvdb-entrytechnical-description
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