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-regi
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-12251
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-122510.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-12251 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Ultimate Member WordPress
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highCVE-2026-15290: The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction…nvd · 2026-07-10
- highCVE-2026-11766: The Ultimate Member WordPress plugin before 2.12.0 does not properly sanitise and escape the v…nvd · 2026-07-06
- mediumCVE-2026-8489: The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction …nvd · 2026-07-03
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