Ultimate Member: User-controlled key permits privilege escalation
Ultimate Member through 2.13.1 permits privilege escalation by accepting a user-controlled key without adequate authorization. The CVSS vector requires low privileges and no victim interaction, but the authoritative export does not identify a minimum WordPress role, target privilege, endpoint, parameter name or function. The exact input-to-operation path is not disclosed. The authoritative export identifies the fixed release as 2.14.0.
- Component
- Ultimate Member
- Plugin slug
ultimate-member- Affected
- <= 2.13.1
- Safe version
2.14.0- Published
- Oct 03, 2026
This CVE was published Oct 03, 2026 and is one of 68 known issues for this plugin.
Update, patch or deactivate.
Update Ultimate Member to 2.14.0 or a later supported release. An application-level fix should bind requested user or object identifiers to the authenticated principal and check authorization before changing privileges. The export does not disclose a concrete handler, so an exact code patch cannot be derived from this record.
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
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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H