Vulnerability · Published Jul 31, 2026 · Assigned by WPScan

CVE-2026-12251Ultimate Member < 2.12.1 - Unauthenticated Privilege Escalation via Role Selection Field

High 8.1

In plain English

A high-severity privilege mismanagement in Ultimate Member from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.4%top 67.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Ultimate Member	0 – before 2.12.1

Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/dd394110-cf3c-4158-8b50-7abb8a23a2be/ exploit, vdb-entry, technical-description