CVE-2026-12251

Ultimate Member < 2.12.1 - Unauthenticated Privilege Escalation via Role Selection Field

Published Jul 31, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Description
The Ultimate Member WordPress plugin before 2.12.1 does not filter administrator-level capabilities from the roles it makes selectable on its registration forms, and its post-registration safeguard against elevated accounts is disabled by default, allowing unauthenticated users to register with a site-defined role that carries administrator capabilities and gain administrative access, when such a role exists and a role-selection field is present on a published registration form.

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-284
CWE-285
Type Values Removed Values Added
Weaknesses CWE-284
CWE-285
Type Values Removed Values Added
Weaknesses CWE-269
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/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
First Time appeared Ultimatemember
Ultimatemember ultimate Member
Wordpress
Wordpress wordpress
Vendors & Products Ultimatemember
Ultimatemember ultimate Member
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Description The Ultimate Member WordPress plugin before 2.12.1 does not filter administrator-level capabilities from the roles it makes selectable on its registration forms, and its post-registration safeguard against elevated accounts is disabled by default, allowing unauthenticated users to register with a site-defined role that carries administrator capabilities and gain administrative access, when such a role exists and a role-selection field is present on a published registration form.
Title Ultimate Member < 2.12.1 - Unauthenticated Privilege Escalation via Role Selection Field
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Jul 31, 2026, 4:55 PM
Reserved
Jun 15, 2026, 8:27 AM
Status
Deferred
Published
Jul 31, 2026, 7:16 AM
Modified
Aug 26, 2026, 4:31 PM