CVE-2026-79995: CWE-639 Authorization Bypass Through User-Controlled Key in User Registration & Membership
Description
A vulnerability in the User Registration & Membership WordPress plugin before version 5.2.5 allows authenticated users with Subscriber-level access and above to cancel any other user's pending email change without verifying ownership of the account. This authorization bypass issue can affect users including administrators.
CVSS v3.1
Score 4.3medium
Affected software
User Registration & Membership
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-79995 describes an authorization bypass vulnerability (CWE-639) in the User Registration & Membership WordPress plugin prior to version 5.2.5. The plugin fails to verify that the user requesting cancellation of a pending email change actually owns the account associated with that change. As a result, any authenticated user with Subscriber-level privileges or higher can cancel another user's in-progress email change, potentially disrupting account management processes.
Potential Impact
The vulnerability allows authenticated users with low-level privileges to interfere with other users' email change requests, including those of administrators. This does not disclose sensitive information or allow privilege escalation but can cause denial of service to legitimate email update operations, impacting user account integrity.
Mitigation Recommendations
No official fix or patch is currently confirmed. Users should monitor the vendor advisory for updates and apply any forthcoming patches promptly. Until a fix is available, consider restricting user permissions or disabling the email change cancellation feature if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-25T17:07:25.695Z
- State
- PUBLISHED
Threat ID: 6a913ad4acd9273b4992fa65
Added to database: 08/28/2026, 07:37:56 UTC
Last enriched: 09/10/2026, 03:23:02 UTC
Last updated: 10/12/2026, 18:48:23 UTC
Views: 100
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