WordPress security changelog
MEDIUM CVE-2026-96539 Deferred

Ultimate Member: Unauthenticated privilege escalation

The supplied vector requires no attacker account. An incorrect privilege assignment can give a caller access beyond the intended authorization boundary. The export does not identify the endpoint, input, assigned privilege, account requirement beyond the unauthenticated vector, or target role. The limited-impact vector does not establish unrestricted Administrator takeover. No victim interaction is required by the vector. The vector reports limited confidentiality impact, limited integrity impact, limited availability impact. The vector also reports high attack complexity; the export establishes only the preconditions described here. Affected versions: <= 2.13.1. The authoritative export identifies 2.14.0 as fixed for this CVE.

CVE / CNA score 5.6 CVSS 3.1 · audit@patchstack.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Ultimate Member
Plugin slug
ultimate-member
Affected
<= 2.13.1
Safe version
2.14.0
Published
Oct 09, 2026
Weakness
CWE-266 — Incorrect Privilege Assignment

This CVE was published Oct 09, 2026 and is one of 68 known issues for this plugin.

Update, patch or deactivate.

Update to 2.14.0 or a later supported release. Application-level remediation: Assign roles and capabilities from a trusted server-side policy, never from unrestricted request values, and enforce authorization before privilege changes.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical description

Incorrect Privilege Assignment vulnerability in Ultimate Member Ultimate Member ultimate-member allows Privilege Escalation.This issue affects Ultimate Member: from n/a through 2.13.1.

CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Primary and upstream sources