CVE-2026-86406
User Registration & Membership < 5.2.8 - Subscriber+ Privilege Escalation via Membership Purchase
- State
- Published
- Severity
- 7.5 High
- Published
- Sep 13, 2026
- Updated
- Sep 13, 2026
- Reserved
- Sep 7, 2026
Description
The User Registration & Membership WordPress plugin before 5.2.8 does not check the capability of the user making a membership purchase, and does not validate the payment method or the plan submitted with it, allowing any authenticated user such as a subscriber to be granted the WordPress role attached to a paid plan without paying for it. Where the site owner has mapped a plan to a privileged role, this leads to privilege escalation up to administrator.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-269 Improper Privilege Management
Affected Products
| Product | Versions |
|---|---|
User Registration & MembershipUnknown |
|
References
- https://wpscan.com/vulnerability/0fb4ec40-3f92-4c7e-8877-8898b355d78d/exploitvdb-entrytechnical-description
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