CVE-2026-6145: WordPress User Registration & Membership missing authorization in registration

CVE-2026-6145 · Severity: medium · CVSS 5.3 · Published 2026-05-14

The User Registration & Membership plugin for WordPress, which manages user sign-ups and account approvals, contains a security flaw that allows new users to bypass administrative approval. By exploiting this vulnerability, an unauthorized person can create an active account on a website without the site owner's permission. This could lead to unauthorized access to restricted areas of the site or the ability to post content without oversight.

Technologies: WPEverest User Registration & Membership. Vendors: WPEverest.

Quick answers

Is CVE-2026-6145 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-6145 being exploited in the wild.
How severe is CVE-2026-6145?
Medium severity, with a CVSS score of 5.3, published 14 May 2026.
Which products and versions are affected?
WPEverest User Registration & Membership Up to and including 5.1.5.
Is there a fix for CVE-2026-6145?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-6145 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-6145?
Check whether you run WPEverest User Registration & Membership 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.

Technical details

The User Registration & Membership plugin for WordPress is vulnerable to Missing Authorization due to an insecure implementation of the is_admin_creation_process() method. This method incorrectly identifies a request as an administrative action based solely on the presence of the 'action=createuser' parameter in the $_REQUEST superglobal, without verifying the user's identity or capabilities. An unauthenticated attacker can exploit this by including this parameter during the registration process via the fallback submission path, effectively bypassing the mandatory admin approval requirement. This vulnerability affects all versions up to and including 5.1.5; a patch is available in subsequent versions.

Affected products

  • WPEverest User Registration & Membership Up to and including 5.1.5

Timeline

  • 2026-05-14: disclosed
  • 2026-05-14: advisory

References

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