User Registration managers can promote themselves through login settings
User Registration & Membership before 5.2.6 saves login settings without the required capability check. A non-administrator who has the plugin's management capability can change arbitrary WordPress options and escalate to Administrator.
- Component
- User Registration & Membership
- Plugin slug
user-registration- Affected
- < 5.2.6
- Safe version
5.2.6- Published
- Aug 28, 2026
This CVE was published Aug 28, 2026 and is one of 49 known issues for this plugin.
Update, patch or deactivate.
Update User Registration & Membership to 5.2.6 or later and audit login settings, WordPress options and administrator-role 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
The User Registration & Membership WordPress plugin before 5.2.6 does not perform a capability check when saving its login settings, allowing authenticated users who have been granted a User Registration & Membership WordPress plugin before 5.2.6 management capability but not full administrator access to change arbitrary site options and escalate their privileges to administrator.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H