CVE-2026-86406
User Registration & Membership < 5.2.8 - Subscriber+ Privilege Escalation via Membership Purchase
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | unknown |
| Product | user registration & membership |
| Published | Sep 13, 2026 |
| Last Updated | Sep 13, 2026 |
Stay Ahead of the Next One
Get instant alerts for unknown user registration & membership
Be the first to know when new high vulnerabilities affecting unknown user registration & membership are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Unknown / User Registration & Membership
4.4.6 < 5.2.8
References
Credits
Karthik Ramakrishnan WPScan