CVE-2026-96451: Ultimate Member privilege escalation in user authorization

CVE-2026-96451 · Severity: high · CVSS 8.8 · Published 2026-10-03

Ultimate Member is a WordPress plugin that manages user registration and profiles. This vulnerability allows a low-privilege user (subscriber) to escalate their account to administrator, gaining full control of the website. Attackers can exploit this remotely to take over affected websites without needing special access.

Technologies: Ultimate Member. Vendors: Ultimate Member.

Quick answers

Is CVE-2026-96451 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-96451 being exploited in the wild.
How severe is CVE-2026-96451?
High severity, with a CVSS score of 8.8, published 3 October 2026.
Which products and versions are affected?
Ultimate Member through 2.13.1.
Is there a fix for CVE-2026-96451?
Yes: fixed in 2.14.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-96451 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-96451?
Check whether you run Ultimate Member at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 2.14.0 or later

Technical details

The vulnerability is an authorization bypass through user-controlled keys in Ultimate Member, allowing privilege escalation. A subscriber-level user can exploit this flaw to elevate privileges to administrator. The vulnerability is remotely exploitable and requires only a user account on the target system.

Affected products

  • Ultimate Member Ultimate Member through 2.13.1

Timeline

  • 2026-10-03: disclosed
  • 2026-10-01: patched: Version 2.14.0 released

References

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