What is CVE-2026-96451?

CVE-2026-96451 is a high-severity vulnerability in Ultimate Member, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.8/10. Published 2026-10-03.

How severe is CVE-2026-96451?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Ultimate Member

CVE-2026-96451

Authorization Bypass Through User-Controlled Key vulnerability in Ultimate Member Ultimate Member ultimate-member allows Privilege Escalation.This issue affects Ultimate Member: from n/a through 2.13.1.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-10-03.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Ultimate Member

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

patchstack.com/database/wordpress/plugin/ultimate-member/vulnerability/wordpres… (vdb-entry)

Frequently asked questions

What is CVE-2026-96451?: CVE-2026-96451 is a high-severity vulnerability in Ultimate Member, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.8/10. Published 2026-10-03.
How severe is CVE-2026-96451?: High severity. CVSS v3 base score is 8.8 out of 10.