Vulnerabilities / Membership Plugin – Kadence Memberships / WPSEC-2026-2992
Membership Plugin – Kadence Memberships <= 4.0.5 - Authenticated (Subscriber+) Membership Level Manipulation via Renewal Registration
Medium 4.3
CWE-840Fixed in 4.0.6
- ID
- WPSEC-2026-2992
- Plugin
- Membership Plugin – Kadence Memberships (restrict-content)
- Affected
- from 3.0 before 4.0.6
- Remediation
- Update to 4.0.6 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-840
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-11-12
- Attack surface
- Membership Plugin – Kadence Memberships on WPSec AttackSurface
- Fix released
- Published
Description
The Membership Plugin – Kadence Memberships plugin for WordPress is vulnerable to business logic abuse via the renewal registration process in rcp_process_registration in all versions up to, and including, 4.0.5, due to missing validation that the membership level submitted with a renewal matches the level of the membership being renewed. This makes it possible for authenticated attackers, with subscriber-level access and above and an existing membership, to renew that membership at the price of a different, cheaper or inactive membership level, without the signup fee.
References
- https://wpsec.com/vuln/WPSEC-2026-2992/
- https://plugins.svn.wordpress.org/restrict-content/tags/4.0.6/
- https://wordpress.org/plugins/restrict-content/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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