CVE-2026-86406

User Registration & Membership < 5.2.8 - Subscriber+ Privilege Escalation via Membership Purchase

Published Sep 13, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-285
Type Values Removed Values Added
First Time appeared Wordpress
Wordpress wordpress
Wpuserregistration
Wpuserregistration user Registration \& Membership
Vendors & Products Wordpress
Wordpress wordpress
Wpuserregistration
Wpuserregistration user Registration \& Membership
Type Values Removed Values Added
Weaknesses CWE-285
Type Values Removed Values Added
Weaknesses CWE-269
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title User Registration & Membership < 5.2.8 - Subscriber+ Privilege Escalation via Membership Purchase
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 13, 2026, 10:45 AM
Reserved
Sep 7, 2026, 12:04 PM
Status
Deferred
Published
Sep 13, 2026, 6:16 AM
Modified
Sep 14, 2026, 9:10 PM