What is CVE-2026-12251?

CVE-2026-12251 is a high-severity vulnerability in Ultimate Member, classified under Improper Privilege Management. CVSS score: 8.1/10. Published 2026-07-31.

How severe is CVE-2026-12251?

High severity. CVSS v3 base score is 8.1 out of 10.

Privilege escalation in Ultimate Member

CVE-2026-12251

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…

Vulnerability class: Privilege Escalation

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Unknown Ultimate Member — versions 0

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-12251?: CVE-2026-12251 is a high-severity vulnerability in Ultimate Member, classified under Improper Privilege Management. CVSS score: 8.1/10. Published 2026-07-31.
How severe is CVE-2026-12251?: High severity. CVSS v3 base score is 8.1 out of 10.